Past Quick Shots

  • Christophe Dorrer elected OSA Fellow

    Senior scientist Christophe Dorrer, a member of the Laser Technology Development group, was elected a Fellow by the Board of Directors of The Optical Society (OSA). He was recognized "for the invention of methods and devices for the control and characterization of ultrafast optical pulses, with significant impact across a wide range of applications, from telecommunications to high-energy lasers." This award recognizes distinguished scientific achievement in the OSA.

    11/24/14

  • Next-Generation Cryo Target

    The next-generation cryo target will employ a new mounting stalk that is specifically designed to be insensitive to vibrational energy once aligned to the 60 beams of the OMEGA laser. Referred to as the "Type 1E target mount," the new stalk was designed by Mechanical Engineering's Brian Rice and uses a 17-µm-diam silicon carbide fiber to attach the cryogenic capsule to a polyimide tube that helps damp vibrations. The alignment-stability requirement is ~1% of the capsule diameter. These targets are filled with several hundred atmospheres of deuterium–tritium fuel and cooled to 19.6 K, or -424°F. Mathematical models, based on mechanical properties measured at 19.6 K, were used to select the target assembly materials and dimensions needed to ensure the stability requirement. Once irradiated by the 60 OMEGA beams, these capsules implode and produce fusion neutron yields of nearly 5 × 1013.

    11/10/14

  • Pump-Laser Adaptive Optics

    Optical parametric amplifier (OPA) output-beam quality is sensitive to the pump-beam profile. Leva McIntire investigates optimizing OPA performance using programmable beam shaping with spatial light modulators to improve pump beams. Here, she aligns a phase corrector to a spatial light modulator for laser beam-shaping experiments in the Laser Development Lab.

    10/27/13

  • Glancing-Angle Deposition for Distributed Polarization Rotators

    The 40-in. coating chamber in the Optical Manufacturing (OMAN) group has been configured to produce coatings by glancing-angle deposition (GLAD). These electron-beam evaporated coatings condense on the surface of the substrate at a high angle of incidence, forming a birefringent film with an oriented columnar structure. By translating the substrate behind an aperture, the surface may be patterned with coated regions of quarter- and half-wave plates. Such a component enables spatially varying manipulation of incident polarization. Vern Gruschow and Jim Oliver of OMAN are shown with a 2-in test sample coated in the system along with the insert showing the film structure.

    10/13/14

  • Isotope Separation System

    LLE's new isotope separation system (ISS) will provide a flexible tritium fuel supply and will ensure that the purity of that fuel supply meets LLE's baseline inertial confinement fusion program requirements. The ISS will recover tritium from existing, unusable spent DT fuel, eliminate the need to ship tritium to/from external cleanup facilities, and provide LLE with the ability to examine fusion reactions at DT ratios other
    than 1:1.

    09/29/14

  • High School Students Present at the Omega Laser Facility Users Group Workshop

    The Sixth Omega Laser Facility Users Group Workshop was held 23–25 April 2014. This year, presentations included posters given by three participants in LLE's 2013 Summer High School Research Program. Eric Hwang (left) of Penfield High School is now attending the University of Michigan. Yifan Kong (center) of Webster Schroeder High School was a semifinalist in the 2014 Intel Science Talent Search competition and is now attending Harvard University. Sam Goodman (right) of Pittsford Mendon High School is now attending Duke University. A more-detailed description of their projects is available here.

    09/15/14

  • Recording Gamma Rays Produced
    During ICF Implosions

    The second and third generation of gas Cherenkov detectors, GCD-2 and -3, sit in the foreground next to one of the ten-inch manipulators, which are used to insert these instruments into the OMEGA target chamber. In the background is OMEGA Experimental System Technician Dan Neyland at the portable manifold, which is part of the system that allows the detector to be evacuated or pressurized with different gasses remotely from below the Target Bay. The third-generation gas Cherenkov detector, used on recent experiments by Los Alamos National Laboratory, records the multitude of gamma rays produced during inertial confinement fusion (ICF) implosions.

    09/02/14

  • LLE Graduate Student Receives
    DOE NNSA Fellowship

    Collin Stillman has been awarded a 2014–2015 DOE NNSA Stewardship Science Graduate Fellowship. Collin is finishing his first year of graduate school in the Physics and Astronomy Department and has been conducting research in high-energy-density science as part of the Plasma and Ultrafast Physics Group at LLE. Collin's research focuses on high-precision, equation-of-state measurements using a novel technique to observe shock-wave propagation within solid targets.

    08/11/14

  • Focal-Spot Testing of an OMEGA
    Distributed Phase Plate

    An equivalent-target-plane diagnostic is shown being used to evaluate a new distributed phase plate (DPP) for the OMEGA Laser System. The diagnostic is situated on the same optical table that is used for ultraviolet holographic recording. An off-axis parabola (OAP) is used to expand a laser beam to the required clear aperture, while a second OAP and a series of interchangable optics are used to form a magnified focal spot. An R80 DPP (left), is being characterized within this test facility by Charles Kellogg, a member of the Optical and Imaging Sciences group. The mirror in the background is used to direct the expanded beam through the test optic.

    07/14/14

  • Graduate Instruction at LLE

    In addition to attending most of their classes on the River Campus, University students also attend classes at LLE. Shown are those attending Optics 443, Optical Fabrication and Testing. Stephen Jacobs, Professor of Optics and Chemical Engineering and LLE Senior Scientist, has been teaching this course for almost 40 years. Apprentice Mike Kaplun and master optician Alex Maltsev are their lab instructors in the optical fabrication shop. In front is visiting lecturer, Ed Fess, the R&D manager from OptiPro Systems, a local company that provides manufacturing technology for precision optical fabrication.

    06/30/14

  • Sixth Omega Laser Facility Users Group Workshop

    The Sixth Omega Laser Facility Users Group Workshop, held 23–25 April 2014, attracted 115 researchers from around the world. The purpose of the workshop is to facilitate a continuing dialog among the individual users and between the users and LLE. Most of the 90 contributed posters were given by students and postdocs in attendance. The next workshop will be held 22–24 April 2015.

    06/16/14

  • X-Ray Detection System

    Rory Hamilton, a University of Rochester graduate, is shown here working on the commissioning of an x-ray detection system to measure electron-induced x-ray emission from targets filled with tritium gas. For glass targets, the silicon and oxygen Kα fluorescence lines dominate the emission spectrum, which enable the determination of the tritium fill pressure. The strength of these lines depends on the tritium partial pressure in the target. In the case of plastic targets, two components are responsible for a broadband, x-ray emission: decay electrons produced by tritium gas in the target and decay electrons originating from tritium bound in the wall of the targets. The detection system can determine the pressure in both glass and plastic targets from the measured activity as well as measure the tritium permeation time constant from plastic targets.

    06/02/14

  • Visiting researchers at LLE
    Visiting researchers at LLE

    The Omega Laser Facility Brings Together Researchers from Around the World

    The Omega Laser Facility provides opportunities for unique international research collaborations. In one week, experimenters included scientists from the Atomic Weapons Establishment (AWE, UK), Commissariat à l'Énergie Atomique (CEA, France), Institut Supérieur de l'Aéronautique et de l'Espace (ISAE, France), Lawrence Livermore National Laboratory (LLNL), Los Alamos National Laboratory (LANL), Massachusetts Institute of Technology (MIT), and Université Jean Monnet–Saint-Etienne (UJM, France), and LLE.

    05/19/14

  • Visitor Safety Review

    Experiments by outside investigators at the Omega Laser Facility require compliance with LLE safety regulations. In turn, to verify assurance for the home institution, visitors are welcome. During one such visit, shown left to right, are LLE's Radiation Safety Officer, Walter Shmayda, and Chief Safety Officer, Doug Jacobs-Perkins, as well as Wal Provart and Dave Egan from the Orion Laser Facility in the United Kingdom.

    05/05/14

  • Graduate Students
    Graduate Students

    Hosting Potential Graduate Students

    One of the primary missions of the Laboratory for Laser Energetics is the education and training of students, ranging from local high school students to graduate students. Shown above are participants from the "Graduating Students Recruiting Weekend" sponsored by the Department of Physics and Astronomy. Administered by Dustin Froula and David Meyerhofer, with the help of their graduate students, the visits included tours of both the OMEGA and OMEGA EP Laser Systems. With 28 collaborating faculty members from five University departments, LLE has 80 graduate students currently pursuing their doctorates.

    04/21/14

  • NIF x-ray spectrometer
    NIF x-ray spectrometer

    NIF X-Ray Spectrometer

    In preparation for the OMEGA calibration shots, the NIF x-ray spectrometer (NXS) is shown with the development team consisting of Sean Regan, Milt Shoup, Mark Bedzyk, Chad Abbott, and Tim Clark. Funded by the Defense Threat Reduction Agency, this time-resolved x-ray spectrometer for the National Ignition Facility was designed, fabricated, and calibrated by LLE through a contract with Lawrence Livermore National Laboratory.

    04/07/14

  • Micromachining In-House

    LLE's Machine Shop manager Richard Fellows displays a row of eight individual parts, each of which will be used in the next-generation planar cryo target. Once assembled, these new targets will be used to optimize use of the OMEGA high-resolution velocimeter system. Many intricate designs are designed and assembled in-house to support the Omega Laser Facility.

    03/24/14

  • Studying OMEGA EP Beam Shaping

    As part of their Ph.D. training at the University, graduate students and LLE Horton Fellows Kaitlin Wozniak (Optics) and Debbie Saulnier (ChE) were given a tour of the OMEGA EP Sources Bay by Senior Scientist Christophe Dorrer. Brittany Taylor, an engineer in the Materials Technologies Group, also participated in the tour. All collaborate with Senior Scientist Stephen Jacobs and Research Chemist Kenneth Marshall on the development of liquid crystal optics for use on the Omega Laser Facility. During the tour, special attention was given to OMEGA EP's high-fluence apodizer for short-pulse operation and the programmable spatial-light modulator (PSLIM) for long-pulse operation.

    03/10/14

  • Visiting Experimenters

    Scientists and support staff from around the world visit LLE's Omega Laser Facility on a routine basis to use the OMEGA Laser System, the OMEGA EP System, or both. Collaborators shown here came from Lawrence Livermore National Laboratory, Princeton University, Massachusetts Institute of Technology, and LLE. These particular experiments investigated astrophysical collisionless shocks using the OMEGA laser.

    02/24/14

  • OHRV System
    OHRV System

    OMEGA High-Resolution Velocimeter

    Scientists Peter Celliers (LLNL, left) and Tom Boehly (LLE, right) set up the OMEGA high-resolution velocimeter (OHRV) system in the OMEGA Target Bay. The OHRV is able to capture a 2-ps, 2-D "image" of a shock front velocity profile with high spatial and temporal resolution. These profiles can be used to study the viscosity of shocked materials and to quantify the effect of laser imprinting on shock uniformity. The device is seen to the right in this image and comprises a probe laser, two interferometers, and a streak camera.

    01/10/14

  • "Stopping-Power" Targets

    A new "stopping-power" target design is being used to generate a warm-dense-matter plasma, where partially degenerate electrons are used to study the slowing down of energetic charged particles. The physics of particle slowing in this particular plasma regime has never before been studied experimentally. These experiments are being conducted by scientists from the Massachusetts Institute of Technology, including Alex Zylstra, Chikang Li, and Hong Sio through the National Laser Users' Facility based at LLE.

    01/27/14

  • Dr. Stephen Craxton and Yifan Kong
    Dr. Stephen Craxton and Yifan Kong

    2013 Summer High School Research Program Participant Named Intel Semifinalist

    Yifan Kong (right) was named a semifinalist in the 2014 Intel Science Talent Search. Kong, advised by Dr. Stephen Craxton (left), is a student at Webster Schroeder High School. She optimized beam pointings for proton-backlighting targets at the National Ignition Facility for an experiment proposed by MIT's Chikang Li. The Science Talent Search is often referred to as the "Junior Nobel Prize" and is the nation's oldest and most prestigious pre-college science competition. Since its inception in 1989, LLE's summer research program has produced 32 semifinalists and 4 finalists. Application forms for the 2014 program will be available in early February and can be found here.

    01/13/14

  • Fire Safety Training

    LLE is designated a "Fight Building," which means that trained LLE personnel may fight a small and contained fire in which there is a clear exit. To provide training, the Laboratory offered an on-site fire-fighting safety class through the University's Fire Safety Unit, coordinated by LLE facilities manager, John Sawyer. Shown is the University's Fire Safety Coordinator, Kathy Weaver, demonstrating the proper use of a fire extinguisher to put out a staged fire. Twenty-three individuals participated in several sessions. Additional information may be found at LLE's Safety Zone Web Site.

    01/02/14

  • VISAR
    VISAR

    VISAR System

    Instrument specialists Andrew Sorce and Joshua Kendrick (not pictured) have realigned a velocity interferometer (VISAR), along with two Rochester Optical Streak System (ROSS) streak cameras used in the active shock breakout (ASBO) diagnostic for the OMEGA EP Laser System. Originally installed in 2009, the entire system was removed to a separate laboratory so that its optical systems could be adjusted and realigned to provide optimal on-shot performance. Shock waves in targets driven by OMEGA EP produce a Doppler shift in the probe beam that is detected by modified Mach–Zehnder interferometers, which require precise and stable alignment.

    12/18/13

  • MIFEDS Upgrade

    The electronics in the MIFEDS (magneto-inertial fusion electrical discharge system) used in magnetized plasma experiments have been extensively redesigned to improve reliability and make the unit more user friendly. The updates include new storage capacitors that quadruple the stored energy, an updated charging power supply, and a new pressurized metal-ceramic triggered spark gap. All the components are housed in an aluminum monocoque enclosure and connected to the magnetic coils via a coaxial vacuum transmission line. The MIFEDS operations are controlled with a laptop-based, custom-built graphical user interface via a compact control "suitcase." Shown is Larry Folnsbee finishing up the assembly.

    12/4/13

  • nTOF Detector
    nTOF Detector

    Neutron Time-of-Flight Detector

    A new neutron time-of-flight (nTOF) detector has been qualified for use on OMEGA. The detector is similar to an earlier device but has a larger scintillator volume for improved signal-to-noise measurements of deuterium–tritium fusion neutrons that scatter in the compressed fuel of cryogenic implosions. The spectrum of the scattered fusion neutrons is one of the key measurements used to infer the implosion performance. The new detector includes additional photomultiplier tubes configured to measure different parts of the neutron spectrum emitted during such implosions. All of the neutron-spectrum–based implosion performance measurements can now be made along a single line of sight from the target. The red ellipse shows the location of the hole in the Target Bay floor that is part of the collimated line of sight from target chamber center to the detector.

    11/19/13

  • In-House First-Aid Training

    Medical emergencies require a deliberate and rapid response. LLE has nearly 60 staff members trained in first aid, cardiopulmonary resuscitation, and use of automated external defibrillators. Annual training is provided at LLE by American Heart Association certified instructors. Jennifer O'Sullivan and Karen Cera are shown performing compressions on a specialized mannequin during a two-person CPR drill at a recent training session.

    11/4/13

  • Steve Jacobs and Brittany Taylor
    Steve Jacobs and Brittany Taylor

    Mapping Liquid Crystal Optics

    Steve Jacobs and Brittany Taylor examine a scan of optical rotatory power for a striped distributed polarization rotator (DPR) device made from liquid crystals (LC's). The 100-mm-diam optic was automatically mapped during a weekend in the UV (at 355 nm) at a 0.5-mm lateral resolution over 68 hours with a Hinds Exicor Mueller Matrix Polarimeter. Older LC DPR device concepts are shown in the foreground.

    10/21/13

  • View from Visitors Gallery
    View from Visitors Gallery

    Joint-Shot Short-Pulse Beam Tube

    Short-pulse beams from the OMEGA EP Laser System may be used in the OMEGA Laser System. They travel through the shield wall to the target chamber through transport tubes. These tubes can be seen from the OMEGA EP visitors gallery by looking at the junction between the grating compressor chamber and the shield wall, and are seen on the right-hand side when viewed from the gallery.

    10/07/13

  • Evaluating GLAD films
    Evaluating GLAD films

    Scanning the Distributed
    Polarization Rotator

    Glancing-angle–deposited (GLAD) films are evaluated on a Zeiss 1530 scanning electron microscope by Jim Oliver and Chris Smith of the Optical Manufacturing Group. The birefringent film structure created by the GLAD process allows for control of the polarization state of the incident light, enabling the vacuum deposition of wave-plate coatings. Such coatings have a potential application to large-aperture distributed-phase rotators, and high-resolution SEM imaging is critical to characterize and understand the deposited film.

    09/23/13

  • 2013 Summer High School Research Program participants
    2013 Summer High School Research Program participants

    25th Year of the Summer Research Program for High School Juniors

    The High School Summer Research Program just completed its 25th year at LLE. High school students from around the Rochester area have been working and learning at the Laboratory, investigating real-world problems while being supervised by scientists and engineers since the program began in 1989. The eight-week program provides an exceptional opportunity for students to experience scientific research in a realistic environment. Students are assigned to a research project that is an integral part of the Laboratory research program.

    09/04/13

  • Neutron Temporal Diagnostic Upgrade

    The neutron temporal diagnostic (NTD) measures the temporal history of neutron production in inertial confinement fusion implosions, and it was recently upgraded to improve reliability and functionality. The temporal history measurement is used to infer important performance parameters from cryogenic deuterium–tritium implosions at LLE (e.g., bang time, burn rate, and peak pressure in the fuel). The new hardware improves the impulse response of the instrument, which will reduce the uncertainty in these performance parameters. The image shows part of the new NTD assembly being lowered into the target chamber during installation at the end of June 2013.

    08/20/13

  • Studying Deuterium as part of the 2013 High School Program

    Under the supervision of Dr. David Harding, Brighton High School student Erin Wang is shown preparing to disconnect the main gas line that feeds deuterium into a cryogenic calorimetry cell. This is part of the process to change a zinc crystal used to seed the growth of solid deuterium while preventing the liquid from supercooling below its triple-point temperature. The calorimetry cell is a surrogate for a cryogenic target. It measures the amount of heat flowing when the deuterium melts and freezes. This allows one to study the thermodynamics of deuterium at its solid–liquid phase boundary. In its 25th year, LLE's Summer Research Program for High School Juniors has had 312 participants, 94 of whom have received advanced degrees.

    08/05/13

  • A New Type of Coil for Magnetized Plasma Experiments

    A new type of coil for magnetized plasma experiments at LLE has been designed and fabricated. The coils consist of several turns of Kapton-insulated wire wound around a nylon coil form. The multi-turn design results in a high magnetic field. The coil form itself is 3-D printed, which allows for virtually an unlimited number of possible precise configurations.

    07/22/13

  • Improving High-Resolution
    Neutron Spectroscopy

    Situated on the floor of the OMEGA Target Bay, a midbeam collimator is positioned between the target chamber and an advanced neutron time-of-flight (nTOF) detector. The nTOF detector is used to measure the neutron spectrum emitted from deuterium–tritium (DT) fusion reactions in cryogenic implosions. Analysis of the spectrum provides important information on the implosion performance. DT neutrons scattered from the target chamber and other structures in the Target Bay can distort the shape of the measured neutron spectrum, leading to incorrect conclusions about the implosion. Neutron transport simulations, common in the nuclear power industry, were used by University of Rochester physics graduate student Chad Forrest (shown aligning the collimator) to define the field of view required for the collimator to mitigate a background of scattered neutrons.

    07/08/13

  • Sydor X-Ray Framing Camera

    A new generation of x-ray framing cameras is now being used on OMEGA. The camera was developed by Sydor Instruments in Rochester, NY to meet the requirements of the experimental program here at LLE. The first use of the new Sydor x-ray framing camera (SFC) in June produced first-of-a-kind images of an imploding cryogenic deuterium–tritium capsule. The camera captures up to 16 sequential, temporally gated images—a short movie of nanosecond-scale phenomena. The data will be used to validate the experimental design. Here, Ray Bahr is shown assembling the SFC in the staging laboratory prior to the first use.

    06/24/13

  • Research and Review Lecture Series

    For almost 45 years, the weekly Research and Review lecture series has been highlighting the work of LLE scientists and engineers, and presenting the latest in LLE advances. The series includes presentations from the theory, experimental, and laser facilities divisions. Shown is scientist Matthias Hohenberger who recently spoke on his polar-drive experiments and experiences as a Principal Investigator at the Lawrence Livermore National Laboratory.

    06/10/13

  • An Illustrated History of the
    Laboratory for Laser Energetics

    LLE recently unveiled an Illustrated History display of the more than 40-year timeline of the Laboratory, starting before 1970 and running through this past year. The display currently contains 29 panels and spans almost 90 feet in the upstairs corridor of the building to highlight the many milestones and achievements of the Laboratory. The panels also tie in to the digital timeline located on the LLE website, which can be found here.

    05/28/13

  • High School Students Present at the Omega Laser Facility Users Group Workshop

    The Fifth Omega Laser Facility Users Group Workshop was held 24–26 April 2013. This year, presentations included posters given by three participants in LLE's 2012 Summer High School Research Program. Emily Armstrong (left), who attends Our Lady of Mercy High School, was a semifinalist in the 2013 Intel Science Talent Search competition. Christa Caggiano (center) attends Victor Senior High School, and Raz Rivlis (right) attends Brighton High School. A more detailed description of their projects is available here. This summer the Summer High School Research Program will begin its 25th year on 8 July 2013.

    05/13/13

  • 2013 Technology Woman of the Year Nominee, Amy Rigatti

    Optical Manufacturing Group Leader, Amy Rigatti, was recently nominated for the 2013 Technology Woman of the Year by Digital Rochester. She was recognized for sustained contributions to her field, advancing the status, opportunities, and employment for women in the technology profession, and her community service in the Rochester area. Amy has worked at the Laboratory for over 22 years, is a member of the Optical Society of America, and is on the program committee for SPIE's Boulder Damage Symposium. She has also contributed to many technical papers in the area of high-damage-threshold optical coatings and regularly presents her work at professional meetings.

    05/06/13

  • XRTS Planar Target

    Senior manufacturing engineer Karl Lintz inspects an x-ray Thomson-scattering (XRTS) planar cryogenic target that will be used to measure collective x-ray scattering from shocked liquid deuterium on OMEGA. The target, designed and fabricated entirely at LLE, has a 40° scattering geometry. XRTS is a primary diagnostic technique used to probe the plasma conditions of high-energy-density–physics plasmas created for inertial confinement fusion research or laboratory astrophysics experiments. XRTS research at LLE involves scientists from around the world.

    04/22/13

  • S&T Seminar
    S&T Seminar

    Rapid Turnaround of Experimental Data

    Rapid turnaround of data is essential in conducting experiments at LLE and is made possible by the use of a new "film." Although the Omega Laser Facility conducts a one hour shot cycle, the configuration of the next shot is sometimes delayed until film processing is complete. A new approach using radiographic film provides critical feedback to experimentalists within minutes. Shown with a batch of processed radiographic film is principal investigator Channing Huntington (LLNL), along with scientists Hye-Sook Park (LLNL), Damiano Caprioli and Anatoly Spitkovsky (Princeton University), Gennady Fiksel (LLE), and Dmitri Ryutov (LLNL). They are examining data from an OMEGA EP shot as part of their study of astrophysical collisionless shocks.

    04/08/13

  • OMEGA EP Fires Five Beams

    Seen in the upper left are four beamlines of OMEGA EP firing during a target shot. Riding along with those four beamlines is the 4ω probe illuminated in its housing in the lower right and next to the grating compressor chamber. The green irradiation stems from the frequency conversion of the primary infrared beam to the second harmonic or 527 nm. Remotely triggered, the image was captured from the top of the target area structure with no bay lights on.

    03/25/13

  • Programmable Spatial Light Modulator
    Programmable Spatial Light Modulator

    Programmable Spatial Light Modulator

    Installed and being activated on OMEGA EP Beamlines 3 and 4, the programmable spatial light modulator (PSLIM) is being used to improve output beam uniformity, which currently limits UV energy delivered to target. PSLIM is a high-resolution, closed-loop beam-shaping system that consists of a spatial light modulator (shown above held by Matthew Barcys) installed at an image plane in the front end of each beamline. The spatial light modulator alters the beam profile by applying a phase term in a 2-D array to the beam such that a prescribed amount of energy is removed at the next spatial filter in the system. A dedicated, custom-built, wavefront sensor is used to provide feedback during beam shaping and achieve the desired near-field profile without adversely affecting the wavefront. Shown are (left to right) Seung-Whan Bahk, Matthew Barczys, and Mike Spilatro.

    03/11/13

  • S&T Seminar
    S&T Seminar

    LLE’s Science and Technology Seminar Series: Intersecting Humanity and Science

    The Science and Technology Seminar series, hosted by LLE for over 28 years, features weekly presentations from experts in their fields. Recently, Dr. Catherine Cerulli, Director of the Susan B. Anthony Center for Women's Leadership and the Laboratory of Interpersonal Violence and Victimization and Associate Professor from the URMC Department of Psychiatry presented a talk on "Using a Public Health Approach to Reduce Violence." Her talk enhanced the awareness of domestic violence and called for finding better detection techniques. Dr. Cerulli (right) was introduced by Dr. Jie Qiao (left), who, along with Dr. Jacques Delettrez are chairing the S&T seminar series for the 2012–2013 academic year. A listing of upcoming and past seminars is available here.

    02/25/13

  • Image from 4ω probe diagnostic
    Image from 4ω probe diagnostic

    4ω Probe Diagnostic Activated

    Shown is the first image obtained with the 4ω probe diagnostic implemented on the OMEGA EP Laser System. Operating at a wavelength of 263 nm, the probe beam illuminates a channel dug into a preformed plasma with a 1200-J infrared channeling beam. The f/2 focusing cone of the IR beam is shown in red. Data obtained with this diagnostic will provide a new view of plasmas relevant for inertial confinement fusion.

    02/13/13

  • Measuring Optics at 355 nm

    Laboratory engineer Brittany Taylor is shown with a liquid crystal circular polarizer (LCP), an optic used in the IR portion of the OMEGA Laser System. This optic is being loaded onto the measuring area of the Exicor 450XT Mueller Matrix polarimeter. This instrument measures linear retardance, diattenuation, and rotation of optics in the ultraviolet region, specifically at 355 nm. We have observed significant amounts of optical rotation in the UV for LCP's, for which there are a variety of possible applications.

    01/28/13

  • Advisors Brian Kruschwitz and Matthew Barczys with Emily Armstrong
    Advisors Brian Kruschwitz and Matthew Barczys with Emily Armstrong

    Summer High School Research Program Participant Named Intel Semifinalist

    Emily Armstrong has been named a semifinalist in the 2013 Intel Science Talent Search (Intel STS). Our 31st semifinalist and a student at Our Lady of Mercy High School, Armstrong was advised by scientists Brian Kruschwitz (left) and Matthew Barczys. She investigated the feasibility of using a Hartmann sensor to make wavefront measurements of high-power ultraviolet lasers. The Intel STS is often referred to as the "Junior Nobel Prize" and is the nation's oldest and most prestigious pre-college science competition, counting seven Nobel Prize winners among its alumni. LLE's Summer Research Program has produced 31 semifinalists, including 4 finalists, since its inception in 1989.

    01/15/13

  • New Damage Test Facility

    The newly constructed Damage Testing Laboratory features a picosecond-pulse testing station (left to center) with a vacuum-damage-testing capability (vacuum chamber is on the front-left) and a nanosecond-pulse station shown on the center-to-right side. The members of the damage testing group are (left to right) Alexei Kozlov, Semyon Papernov, and Brittany Taylor. The fourth person in the picture is senior scientist Andrey Okishev, who designed and built the high-performance nanosecond-pulse laser.

    12/27/12

  • Staging Cryogenic Targets

    In preparation for cryogenic target shots, Moving Cryostat Transfer Carts (MCTC) are positioned below the OMEGA Target Bay. One of the carts is partially seen (behind the support post) secured under the lower pylon. Cryogenic and Tritium Facility MCTC Technician, Desirée Whitaker, is shown securing one of the carts, while experimental operations technician, Matt Maslyn, prepares for the next cryogenic campaign.

    12/11/12

  • International Attendees of the 2012
    OSA and APS Meetings Tour LLE

    The 96th Annual Meeting of the Optical Society of America, Frontiers in Optics 2012, and the 28th meeting of the American Physical Society Division of Laser Science met for five days in Rochester. As part of the program, a variety of special events included a tour at LLE that brought together 48 individuals from 16 countries comprising 38 institutions and universities. The tour participants enjoyed viewing the OMEGA and OMEGA EP Laser Systems and interacting with the scientists, engineers, and students working here.

    11/19/12

  • The OMEGA EP 4ω Probe Diagnostic

    The OMEGA EP 4ω probe diagnostic system will use a 10-ps, 263-nm laser pulse to illuminate target interactions. The light refracts through the plasma allowing various diagnostics to study laser–plasma interactions. An optical collection system will provide access to high-density, large-scale-length, laser-produced plasmas. LLE engineer Raymond Huff is shown characterizing the 4ω probe laser beam at a relay image plane of target chamber center, which is attached to the OMEGA EP target chamber (partially visible in the background).

    10/30/12

  • Mounting Cryogenic Targets

    Cryogenic targets are assembled in a Class-100 cleanroom using a target assembly station consisting of a microscope, motion stages with micrometer positional control, and cameras. The assembler is shown attaching an 865-µm-diameter capsule to a 17-µm-diameter silicon-carbide fiber, as viewed in the computer monitor on the left. All the assembly and characterization processes are performed in the cleanroom environment to maintain the cleanliness of the target's surface. The target is then processed in the Cryogenic Target Handling System.

    10/15/12

  • Radially Polarized Laser Beams

    Radially polarized beams are desirable for their advantages in laser cutting, high-resolution microscopy, and optical trapping. Christa Caggiano, a participant in LLE's Summer Research Program for High School Juniors, is shown holding a photoaligned liquid crystal device she made that converts linearly polarized light to radially polarized light. The background image is a previously captured far field of a radially polarized beam, which is a doughnut-shaped intensity distribution.

    10/01/12

  • Focal-Spot Testing for
    NIF Polar-Drive Optics

    An equivalent-target-plane diagnostic has been constructed to evaluate phase plates used on either the National Ignition Facility (NIF), OMEGA 60, or OMEGA EP Laser Systems. The diagnostic was built on the same optical table that is used for ultraviolet holographic recording. An off-axis parabola (OAP) is used to expand a laser beam to the required clear aperture, while a second OAP is used to form either a magnified focal spot or quasi-near-field beam pattern. A NIF phase plate, shown positioned at the lower right, is being characterized within this test facility by optics engineers Jo Bunkenburg and Charles Kellogg.

    09/12/12

  • Target Bay Optics Inspections

    Optics inspectors Scott Hylas (left) and Mark Bowman (right) examine the large UV-beam reflecting mirrors on OMEGA's north-end mirror structure. Working 15 ft off the ground floor, Scott is also harnessed to the structure. There are a total of 120 large mirrors, with the second set residing on the target mirror structure (white containers seen in the Quick Shot from 08/01/11). The sixty focusing lenses and distributed phase plates found near the target chamber are more difficult to access and maintain.

    08/22/12

  • 24th Summer Research Program for High School Juniors

    The High School Summer Research Program begins its 24th year at LLE with 16 high school students investigating real-world problems while being supervised by scientists and engineers at the Laboratory. Shown is Aimee Owens along with her advisor, system scientist Tanya Kosc, at a liquid crystal circular polarizer (LCP). Tasked with identifying and testing possible degradation mechanisms, she is being shown the test fixture and technique for measuring the LCP's in situ in the OMEGA Laser Bay.

    08/06/12

  • Ultrafast Optical Parametric Amplifier
    Ultrafast Optical Parametric Amplifier

    Ultrafast Optical Parametric Amplifier

    A picosecond-pumped ultrafast optical parametric amplifier (UOPA) has been deployed on OMEGA EP to enhance temporal contrast and to support additional user experiments. Seen here working on one of the UOPA's in the Laser Development Laboratory are senior research engineer Rick Roides (left) and senior scientist Christophe Dorrer (right).

    07/23/12

  • Riccardo Betti Honored with DOE Award
    Riccardo Betti Honored with DOE Award

    Riccardo Betti Honored with DOE Award

    On 21 May 2012 in Washington DC, Dr. Riccardo Betti accepted the Ernest Orlando Lawrence Award from Department of Energy Secretary Steven Chu for research in fusion and plasma sciences. The E.O. Lawrence Award honors scientists for their exceptional contributions in research and development in support of the Department of Energy. Dr. Betti is Professor and Director of the Fusion Science Center of Extreme States of Matter and Fast Ignition, University of Rochester, and Assistant Director for Academic Affairs at LLE. In 2009, he was awarded the Edward Teller medal for pioneering research and leadership in inertial fusion sciences and applications.

    07/09/12

  • Multi-FM pulse rack
    Multi-FM pulse rack

    Multiple-FM Smoothing by Spectral Dispersion (Multi-FM SSD)

    The Laboratory for Laser Energetics is a world leader in developing smoothing by spectral dispersion (SSD) which has been shown to be critical for the success of direct-drive target implosions. The latest innovation is this prototype Multi-FM SSD system for the National Ignition Facility (NIF), which has been integrated into the OMEGA EP Laser System. The modified OMEGA EP beamline allows for experimental validation of this novel beam-smoothing capability before its implementation onto the NIF Laser System.

    06/25/12

  • NIF Preamplifier Module
    NIF Preamplifier Module

    NIF Preamplifier Module Update

    Since its introduction in the 21 May 2008 Quick Shot, the National Ignition Facility (NIF) preamplifier module (PAM), shown here installed in the OMEGA EP Sources Bay, has been used to test Multi-FM 1-D smoothing by spectral dispersion (SSD), a beam-smoothing technique that will be implemented on the NIF. At the PAM is Laser Sources Engineer Albert Consentino.

    06/04/12

  • Quick Shot
    Quick Shot

    Multilayer-Dielectric Diffraction Gratings

    Multilayer dielectric (MLD) diffraction gratings, used in OMEGA EP's pulse compressors, must be cleaned with aggressive chemicals to remove manufacturing residues. Here, Horton Fellow Heather Howard uses Nomarski differential interference contrast (DIC) microscopy to inspect an MLD grating coupon for defects and mechanical damage following chemical cleaning.

    05/21/12

  • OLUG Attendees
    OLUG Attendees

    Fourth Omega Laser Facility
    Users Group Workshop

    The Fourth Omega Laser Facility Users Group Workshop, held 25–27 April 2012, attracted over 100 researchers from 19 universities, 18 centers and laboratories, and 9 foreign countries. The purpose of the workshop is to facilitate a continuing dialog among the individual users and between the users and LLE. Most of the 75 contributed presentations were given by the 50 Ph.D. students and postdocs in attendance. The next workshop will be held 24–26 April 2013, with an Omega users meeting at APS on 30 October 2012. More information about the Omega Facility Users Group can be found here.

    05/07/12

  • Maintaining flash lamps
    Maintaining flash lamps

    View OMEGA from the Visitors Gallery

    Maintaining the OMEGA Laser System requires a highly trained staff, especially with over 4,500 optics, 216 amplifiers, 6,672 flash lamps, and approximately 12 miles of high-voltage PFN cable. This view shows Amplifier Technician Josh Reindl accessing the flash lamps in one of the 60 beamlines. Flash lamps, which are used to stimulate the laser pulse as it travels, require periodic inspection. They are modular and can be replaced in between laser shots if necessary.

    04/16/11

  • Multichannel Electron Spectrometer
    Multichannel Electron Spectrometer

    Multichannel Electron Spectrometer

    The Osaka University electron spectrometer (OU-ESM) measures fast electrons produced during fast-ignition experiments. Developed by a group headed by Professor Kazuo Tanaka at the Institute of Laser Engineering, Japan, it is a ten-inch manipulator–based diagnostic for the OMEGA target chamber. The OU-ESM is capable of measuring escaping electrons with different view angles covering 25° in 5° increments, over a few tens-of-MeV detection range with high-energy resolution. A very strong magnetic field (4.5 kilogauss between the poles) disperses the electron spectrum onto an image plate detector.

    03/26/11

  • Attaching a stick of adhesive into a dynamic mechanical analyzer
    Attaching a stick of adhesive into a dynamic mechanical analyzer

    Understanding Adhesives
    at Cryogenic Temperatures

    Adhesives play an increasingly important role in cryogenic experiments. To better understand their effectiveness at these temperatures, Mackenzie Hall is shown mounting a sample of an adhesive into a dynamic mechanical analyzer. This instrument not only tests the properties of the adhesive at these very cold temperatures as a function of applied vibrational frequencies, but also determines their upper fatigue limit when used to attach cryogenic pellets to their stalks.

    03/12/12

  • Streaked Optical Pyrometer
    Streaked Optical Pyrometer

    Streaked Optical Pyrometer Upgrade

    The streak camera upgrade for the streaked optical pyrometer (SOP) system has been completed. Located in the OMEGA target bay, the SOP cabinet houses the Rochester Optical Streak System (ROSS) shown in its base.The SOP detects self-emission from materials that are compressed by laser-driven shocks and is used to infer temperatures of compressed samples under study. Initial experiments indicate that use of the ROSS provided a higher signal-to-noise ratio than the previous system.

    02/27/12

  • Transporting Cryogenic Targets
    Transporting Cryogenic Targets

    Transporting Cryogenic Targets

    In preparation for cryogenic target shots, the area below the OMEGA Target Bay is dedicated to 5,000-lb carts which travel on air from their fill transfer station. Four of the moving cryostat transfer carts (MCTC's) are shown ready for docking with the target chamber during a recent campaign. With MCTC Operations Engineer, Vera Versteeg, at one of the displays, real-time imaging of the cryogenically cooled target (maintained at 19.5 K) is possible.

    02/13/12

  • OMEGA
    OMEGA

    View OMEGA from the Visitors Gallery

    A view of the OMEGA Target Bay displays many uncommon, mystifying, and sometimes moving objects. As shown, the crane is being used to carry a large, torpedo-shaped instrument to the OMEGA target chamber. Although high-speed cameras look similar, the parabola alignment diagnostic (PAD), carefully handled by Harold Beck, is used to align and optimize the short-pulse optics. Built in-house, the PAD provides submicron measurements with an internal pointing camera and wavefront sensor.

    01/30/12

  • Patricia Olson
    Patricia Olson

    Summer High School Research Program Participant Named Intel Semifinalist

    Patricia Olson (right) was named a semifinalist in the 2012 Intel Science Talent Search. Olson, advised by Dr. Stephen Craxton (left), is a student at Brighton High School. She optimized beam configurations for shock-ignition experiments on both OMEGA and the National Ignition Facility. The Science Talent Search is often referred to as the "Junior Nobel Prize" and is the nation's oldest and most prestigious pre-college science competition. Since its inception in 1989, LLE's summer research program has produced 30 semifinalists and 4 finalists. Application forms for the 2012 program will be available in early February.

    01/16/12

  • Safety and Laser Upgrades
    Safety and Laser Upgrades

    Safety and Laser Upgrades

    Although periodic safety inspections are carried out at the Omega Laser Facility, special attention to safety is paid to any major upgrades within the systems. Shown is Matt Moore (left) describing the upgrade of OMEGA EP's infrared alignment table to Doug Jacobs-Perkins, LLE's Chief Safety Officer.

    01/04/12

  • Fill Transfer Station
    Fill Transfer Station

    Fill/Transfer Station Upgrade

    LLE continues to make strides in pursuit of the perfectly formed target. Introduced in a previous Quick Shot (05/09/11), the shroud cooler has been installed in Fill/ Transfer Station 1 (FTS-1). Accessing the chamber in which targets are filled with hydrogen isotopes is infrequent and requires complicated efforts to carry it out. Under the dome is Mark Romanofsky fine-tuning the installation of the shroud cooler and guide rail plates.

    12/19/11

  • OMEGA Data Capture
    OMEGA Data Capture

    OMEGA Data Capture on Film

    Photographic film continues to be a source for recording experimental results. After processing raw film data, Stephanie Dent is shown inspecting a two-inch-round piece of film used in an x-ray pinhole camera. When requested, these data are then scanned for further evaluation.

    12/05/11

  • Debra Saulnier
    Debra Saulnier

    Undergraduate Work at LLE

    There are currently 80 graduate students and 43 undergraduates at LLE. Shown is Debra Saulnier positioning a sample with the materials lab's NMR instrument. Debra has worked at LLE while attending the University's undergraduate program and is currently a doctoral candidate in the Chemical Engineering Department. Her work includes the synthesis of photoactive chiral and non-chiral near-IR transition-metal complexes and photoswitchable liquid crystal alignment layers for device applications in laser systems.

    11/21/11

  • Shroud Cooler
    Shroud Cooler

    Inside the OMEGA EP Target Chamber

    The ten-foot-diameter OMEGA EP target chamber continues to be populated with various diagnostics and other equipment. Two 4ω probe wells (entrance tubes) were recently installed, one of which is seen in the center of the image just below a ten-inch manipulator (TIM-14) used to maneuver diagnostics into the target chamber. Shown is Jeff Rodas working on TIM-12.

    11/07/11

  • Planar Cryogenic Target
    Planar Cryogenic Target

    Planar Cryogenic Targets
    within Moving Cryostats

    Planar cryogenic targets are transported within moving cryostats that are also used to position targets before they are shot by the OMEGA laser. A planar cryogenic target with its capillary fill tube is shown sitting atop its transport structures awaiting docking to the lower pylon on the OMEGA target chamber.

    10/24/11

  • Ultra-broadband Front-End Project
    Ultra-broadband Front-End Project

    Ultra-Broadband Front-End Project

    The pulse stretcher for the ultra-broadband front-end project, partially visible in the lower left, uses two gratings and cylindrical Öffner mirrors to stretch 200-nm pulses to 750 ps before they are amplified. Shown are Matt Millecchia and Jake Bromage positioning the stretcher optics using the Faro arm before fine alignment.

    10/10/11

  • ROSS Streak Tube
    ROSS Streak Tube

    Diagnosing OMEGA EP Pulse Shapes

    The heart of the ROSS (Rochester Optical Streak System) cameras is the streak tube. Shown here is the 2-ps-time-resolution P820 streak tube manufactured by Photonis (Brive, France). This tube will be packaged into the UROSS camera and used to diagnose the pulse shape on the OMEGA EP short-pulse beamlines.

    09/26/11

  • Improving Laser Damage Thresholds
    Improving Laser Damage Thresholds

    Improving Laser Damage Thresholds

    A new photoalignment process is being developed to produce liquid crystal (LC) devices. These devices will have substantially higher 1054-nm laser damage thresholds (between 30–40 J/cm2, at 1 ns) than those currently deployed in the OMEGA laser (e.g., LC wave plates ) that use buffed Nylon alignment coatings. Marisa Vargas is shown installing fused silica plates into a Brewster's angle pile-of-plates polarizer assembly that will be used to generate linearly polarized UV light for fabrication of large-aperture, photoaligned liquid crystal devices.

    09/12/11

  • 2011 Summer High School Research Program
    2011 Summer High School Research Program

    2011 Summer High School Research Program

    The High School Summer Research Program just completed its 23rd year at LLE with 16 high school students investigating real-world problems while being supervised by scientists and engineers at the Laboratory. Shown is Madeline Rutan of Penfield High School holding a glass sample with which she examines abrasion-resistant sol-gel coatings. Her research advisor was Ken Marshall.

    08/29/11

  • Cone-in-Shell Target
    Cone-in-Shell Target

    Cone-in-Shell Target

    This target, with a plastic spherical shell of diameter 860 µm, and a gold cone with an opening diameter of 3.5 mm, is used to study the Rayleigh–Taylor instability in spherical implosions. During the experiment, the shell is imaged by x-ray radiography using a Tantalum-foil backlighter irradiated by six OMEGA beams. The shell is doped with silicon of various concentrations to investigate the effect of radiation preheating on the dynamics of laser-imprinted perturbations.

    08/15/11

  • View OMEGA from the Visitors Gallery
    View OMEGA from the Visitors Gallery

    View OMEGA from the Visitors Gallery

    A view of the OMEGA Target Bay displays many uncommon, and sometimes mystifying, structures. For example, the center structure seen here houses a 10-ft-wide, spherical vacuum chamber designed to implode a target the size of a grain of sand. Although typically unseen, such targets must be manually introduced into the chamber. This image shows one of the targets being inserted into its positioner before being transported to the center of the chamber.

    08/01/11

  • Machining NIF Diagnostics
    Machining NIF Diagnostics

    Machining NIF Diagnostics

    Starting with a 53-lb block of aluminum, Ron Callari machined a spectrometer body weighing 5.5 lbs. These casings will house four x-ray Bragg crystals for use in the Supersnout II diagnostic. Designed at LLE, two identical instruments will be assembled, inspected, calibrated, and shipped to the National Ignition Facility for use on the National Ignition Campaign and in High-Energy-Density Physics experiments.

    07/18/11

  • Product Quality Assurance Tool
    Product Quality Assurance Tool

    Product Quality Assurance Tool

    Many components and assemblies used at LLE require very high precision manufacturing tolerances. Here, Tim Clark uses a portable coordinate measuring arm to acquire 3-dimensional, point-to-point measurements of a deformable mirror. This is one of several instruments available to verify incoming product quality by performing fast and in-depth inspections, CAD-to-part analysis, and reverse engineering.

    07/06/11

  • Upper and Lower Cryo Shrouds
    Upper and Lower Cryo Shrouds

    Upper and Lower Cryo Shrouds

    Continued improvements in the delivery of cryogenic targets to the center of the OMEGA target chamber have led to upgraded upper and lower thermal shrouds shown here. Housed in the moving cryostat transport cart, the lower shroud protects, cools, and positions the mounted target. During experimental operations, the upper shroud is quickly removed from near the target by a high-velocity retractor just prior to the shot.

    06/20/11

  • LLE Diagnostic
    LLE Diagnostic

    LLE Diagnostics
    at the National Ignition Facility

    The south pole bang-time detector, one of several diagnostics designed and fabricated by LLE specifically for the National Ignition Facility (NIF), is shown here inside the NIF target chamber. This detector is used to determine the time of peak x-ray emission emanating from an imploded capsule along the hohlraum axis. Such information is essential in understanding the hydrodynamic response of fusion targets to the applied laser drive.

    06/06/11

  • OLUG Attendees
    OLUG Attendees

    Third Omega Facility
    Users Group workshop

    The third Omega Laser Facility Users Group Workshop, held 27-29 April 2011, attracted over 115 researchers from 15 universities, 14 centers and laboratories, and 13 countries. The purpose of the workshop was to facilitate a continuing dialog among the individual users and between the users and LLE. Most of the 57 contributed presentations were given by the 50 students and postdoctoral candidates in attendance. The next workshop will be held 25-27 April 2012.

    05/23/11

  • Shroud Cooler
    Shroud Cooler

    Fill/Transfer Station Shroud Cooler

    The shroud cooler is used in the Fill/Transfer Station (FTS) as part of the cryogenic layering system. It is used to remove and keep the upper shroud cold during the target transfer process. This piece of equipment was fabricated in-house and will be installed in the FTS-1 upgrade when it goes down for maintenance.

    05/09/11

  • Hubble News Team Visits LLE
    Hubble News Team Visits LLE

    Hubble News Team Visits LLE

    A crew from the Space Telescope Science Institute visited LLE to follow up on findings from NLUF experiments carried out on the Omega Laser Facility. These high-energy-density physics experiments have been used to replicate astrophysical phenomena observed by the Hubble Space Telescope.

    04/25/11

  • MIFEDS
    MIFEDS

    Magnetized ICF Targets

    Various coil designs have been utilized in experiments with magnetized ICF targets using the magnetic field generator MIFEDS. Shown are four different coil shapes, ranging in size from 6 to 16 mm, superimposed on an image of a target shot (OMEGA S/N 59300) which utilized one of these coils. Inside the target chamber, the shot image measures about 0.9 m across. Additional information on the system may be found in this Around the Lab article.

    04/11/11

  • International Workshop on ICF Shock Ignition Attendees
    International Workshop on ICF Shock Ignition Attendees

    First International Workshop
    on ICF Shock Ignition

    Sponsored by LLE, the first International Workshop on ICF Shock Ignition was held on 8–10 March 2011. Representatives from institutions worldwide interested in shock ignition visited LLE to discuss the current status of a variety of topics, including: facility forecasts; target design and simulations; and the effects of laser–plasma interactions during a shock-ignition implosion. Plans for the next workshop, to be held in the fall of 2011 at either IFSA or APS, are already underway.

    03/28/11

  • Integrating Optics

    As part of the optics maintenance program, LLE's Optical Manufacturing group monitors and prepares large optics for integration into the Omega Laser Facility. Here, a cluster of three optics undergoes inspection. Nearest the inspector is the vacuum window, followed by the focus lens (center), and the ultraviolet diagnostic beam splitter (UV DBS). The first two optics comprise an OMEGA EP final optics assembly. The UV DBS is used to reflect 4% of the beam to a diagnostic chain.

    03/21/11

  • NIF South Pole Bang-Time Diagnostic
    NIF South Pole Bang-Time Diagnostic

    South Pole Bang-Time Diagnostic

    The south pole bang-time detector is used to determine the bang time along the hohlraum axis as one of the National Ignition Facility's diagnostics used for the National Ignition Campaign. This is essential in understanding the time it takes to illuminate a target and come to a fusion peak. Diamond x-ray detectors and graphite crystal mirrors are enclosed by a Hevimet housing completely fabricated at LLE.

    03/07/11

  • Spherical Crystal X-ray Imager
    Spherical Crystal X-ray Imager

    Spherical Crystal X-ray Imager

    LLE has developed a monochromatic x-ray imager for backlit and self-emission plasma imaging at Cu Kα line radiation at 1.541 Å (8.048 keV) . The image is formed by a spherically bent quartz crystal with a diameter of 25 mm and a curvature radius of 500 mm. The crystal acts like a focusing spherical mirror forming an x-ray image with a very good spatial resolution.

    02/21/11

  • Dr. Eric Toone visit
    Dr. Eric Toone visit

    Dr. Eric Toone Visits LLE

    Dr. Eric Toone, Deputy Director for Technology for the Advanced Research Projects Agency, recently visited the Laboratory. He is shown in the OMEGA EP viewing gallery where Dr. D. D. Meyerhofer (LLE Deputy Director) and Mr. S. F. B. Morse (Omega Laser Facility Director) are describing the laser system.

    02/07/11

  • NIF Zirconium Neutron Activation Diagnostic
    NIF Zirconium Neutron Activation Diagnostic

    NIF Zirconium Neutron Activation Diagnostic

    The zirconium Neutron Activation Diagnostic (Zr-NAD) is one of several diagnostics that have been developed, designed, and/or engineered by LLE for the National Ignition Campaign. This diagnostic will use nuclear activation of a zirconium foil to measure the primary neutron yield from implosions of DT fuel. The device was designed to place the zirconium foil at a precise distance from the imploding target, resulting in an accurate neutron yield measurement.

    01/21/11

  • NIF Zirconium Neutron Activation Diagnostic
    NIF Zirconium Neutron Activation Diagnostic

    A 2010 LLE Summer High School Research Program Participant Named Intel Semifinalist

    Barry Xu (right) was named a semifinalist in the 2011 Intel Science Talent Search. Xu, advised by scientist Suxing Hu (left), is a student at Brighton High School. He worked on an improved model for the transfer of energy between electrons and ions in LLE's implosion experiments. The Science Talent Search is often referred to as the "Junior Nobel Prize" and is the country's most prestigious science scholarship competition. Since its inception in 1989, LLE's summer research program has produced 29 semifinalists and 4 finalists. Application forms for the 2011 program will be available on this Website in early February.

    01/24/11

  • OSA & APS/DLS Annual Meeting attendees
    OSA & APS/DLS Annual Meeting attendees

    Optical Society of America and American Physical Society Annual Meeting attendees visit LLE

    The annual meetings of the Optical Society of America and the American Physical Society Division of Laser Science occurred in Rochester, New York. Visitors from 17 countries attending OSA's Frontiers in Optics 2010 and DLS's Laser Science XXVI toured LLE on the day after the joint conference to celebrate the 50th anniversary of the laser.

    01/07/11

  • SPIE video interview with LLE Director Dr. Robert L. McCrory on the 50th anniversary of the Laser.
    SPIE video interview with LLE Director Dr. Robert L. McCrory on the 50th anniversary of the Laser.

    SPIE interviews LLE Director Dr. Robert L. McCrory on the 50th anniversary of the Laser.

    SPIE conducted a video interview with LLE Director Dr. Robert L. McCrory where he discusses the role of the LLE on the 50th anniversary of the invention of the Laser.

    10/18/10

  • ICUIL 2010 Conference group photo with committee.
    ICUIL 2010 Conference group photo with committee.

    ICUIL 2010 Conference

    Sponsored by LLE, the International Committee on Ultra Intense Lasers (ICUIL) held its 4th biennial meeting in Watkins Glen, New York. Representing 17 countries, 95 of the almost 150 participants are shown with the ICUIL board. ICUIL provides for international collaborative activities in developing the next generation of ultrahigh-intensity lasers.

    10/06/10

  • Electrostatic Ignition of Flammable Vapors
    Electrostatic Ignition of Flammable Vapors

    Electrostatic Ignition of Flammable Vapors

    Thomas Jones, Professor of Electrical Engineering at the University of Rochester, demonstrates ignition of acetone vapor as part of a presentation to the students in the Summer High School Research Program. Because of the two-second exposure, one sees both the rising fireball and the spark that initiated the ignition.

    08/30/10

  • Safety Training Session
    Safety Training Session

    2010 High School Summer Research Program

    When it comes to safety, those attending the 22nd Annual High School Summer Research Program satisfy the same requirements as every new hire at LLE. Each student is required to satisfactorily complete one or more of the nine safety trainings before beginning participation in the program. Shown is Dr. Walter Shmayda, radiation safety officer, beginning the first of five lectures on radiation safety.

    08/16/10

  • Quick Shot
    Quick Shot

    DOE Under Secretary Koonin Visits LLE

    Dr. Steven Koonin, the U. S. Department of Energy Under Secretary for Science, met with the Director, Dr. Robert McCrory, the Associate Director for Operations, Capt. Steven Loucks (USN-Ret), as well as, division directors, scientists, and students during his recent visit to LLE.

    08/02/10

  • Visitors from CEA
    Visitors from CEA

    CEA Visit

    A team from Commissariat à l'Énergie Atomique (CEA) recently visited LLE to discuss the build progress of the Laser Mégajoule laser system and exchange technical information on thin-film coatings for high-peak-power laser applications. CEA is collaborating with LLE's Optical Manufacturing group on large-area optical coating development for a deformable mirror component.

    07/19/10

  • Preparing a membrane for testing
    Preparing a membrane for testing

    Membranes that Respond to Light

    Novel gas membranes that demonstrate variable permeability when illuminated with different wavelengths of light have recently been developed at the Optical Materials Laboratory. These are based on light-sensitive liquid crystals, synthesized at LLE, and absorbed into micropores of a thin plastic sheet. Shown is one of the developers, Eric Glowacki, preparing a membrane for testing using a custom-built permeation measurement tool.

    UPDATE: Patent issued May 2013
    K. L. Marshall and E. Glowacki, "Photo-Switchable Membrane and Method," U.S. Patent No. 8,435,333 (7 May 2013).

    07/06/10

  • Physics Today Cover
    Physics Today Cover

    OMEGA Experiment on the Cover of Physics Today

    The June 2010 issue of Physics Today magazine includes an article on high-energy-density physics by Paul Drake from the University of Michigan. The front cover features an image taken for his experiment from inside the OMEGA target chamber. Physics Today, the flagship publication of The American Institute of Physics and the most influential and closely followed physics magazine in the world, is delivered to more than 120,000 readers. To see the full article, visit the Physics Today web site.

    06/21/10

  • Off-Axis Parabola
    Off-Axis Parabola

    Completion of the Off-Axis Parabola Inserter/Manipulator Project

    A fisheye view of the OMEGA EP target chamber (with the laser beamlines to the right) shows off the last of the three Off-Axis Parabola Inserter/Manipulators (OAPI/M'S) to be installed at the Omega Laser Facility. Previously highlighted in the 2/01/10 Quick Shot, the Gate Valve Electrical Drive is installed on the upper left side of the gate valve, just left of photograph center. An Off-Axis Parabola, previously shown in the 8/11/08 Quick Shot, is maneuvered by an OAPI/M inside the target chamber.

    06/09/10

  • OLUG Workshop Attendees
    OLUG Workshop Attendees

    Second Omega Laser Facility
    Users Group Workshop

    The second Omega Laser Users Group Workshop, held 28-30 April 2010 attracted 115 researchers from 19 universities, 21 Centers and laboratories, and 5 countries. The purpose of the workshop was to facilitate communication and exchanges among the individual users and between the users and LLE. Sixty presentations highlighting on-going and proposed research experiments were given, most of which were presented by the 45 students and postdoctoral candidates in attendance. Plans for the next workshop, to be held 27-29 April 2011, are already underway.

    05/27/10

  • Dell computing cluster
    Dell computing cluster

    New Dell Computing Cluster (Cyclone)

    The increased computing power of the new Dell computing cluster makes it practical to program hydrodynamic models using a finer resolution than previous systems. Because individual nodes can be taken out of service while the rest of the cluster continues to process jobs, the distributed architecture of the cluster improves reliability. Shown is Tony Brancato performing diagnostic tests on one node of the 72-node cluster.

    05/10/10

  • First Copper-Welded Planar Cryo Tank
    First Copper-Welded Planar Cryo Tank

    First Copper-Welded Planar Cryo Tank

    The first application of fusion welding a copper tank has been used in Target Fabrication as enhancements continue to be designed and incorporated into LLE's cryogenic program. The unique technique used in-house to make pressure vessels without seams has been successfully applied to elements of planar cryo. These pressure vessels are used to store the fill gas for a variety of planar cryogenic targets. The upgrade will reduce the amount of maintenance and improve long-term reliability over a larger number of uses. Shown in LLE's machine shop is Dale Guy whose helmet design is illuminated by the weld's intense light.

    4/26/10

  • Diffraction Grating Microscopy
    Diffraction Grating Microscopy

    Diffraction Grating Microscopy

    Atomic Force and Nomarski microscopes are mounted side-by-side on a large gantry to examine the surfaces of large holographic diffraction gratings. Shown in reflection are Charles Kellogg and Kevin McGowan, from the Optics and Imaging Sciences Group, examining a prototype grating manufactured by the Plymouth Grating Laboratory. Accurate characterization of the grating pillars and surface defects is crucial to establishing a manufacturing process leading to laser damage resistant gratings.

    04/12/10

  • S&T Seminar Series
    S&T Seminar Series

    LLE’s Science and Technology
    Seminar Series

    The Science and Technology Seminar series, hosted by LLE for over 25 years, features weekly presentations to LLE staff from experts in their fields. Recently, Tina Oldknow, Curator of Modern Glass at the Corning Museum of Glass, presented a talk on a contemporary art exhibition. She is shown with Jake Bromage who, along with Igor Igumenshchev, have secured speakers for this year. A listing of upcoming and past seminars is available here.

    03/29/10

  • Harvest Zhang, Summer High School Research Program Participant
    Harvest Zhang, Summer High School Research Program Participant

    Summer High School Research Program Participant Named Intel Semifinalist

    Harvest Zhang was named semifinalist in the Intel Science Talent Search 2010. Zhang, advised by Lance Lund, is a student at Brighton High School. His research included work on LLE's cryogenic targets. The Science Talent Search is often referred to as the "Junior Nobel Prize" and is the country's most prestigious science scholarship competition. Since its inception in 1989, LLE's Summer Research Program has produced 28 semifinalists and 4 finalists. The deadline for applications to the 2010 Summer Research Program is Wednesday, March 24 at 5 pm.

    03/15/10

  • A large short-pulse high reflector mirror
    A large short-pulse high reflector mirror

    The First Production Run of a
    Plasma-Assisted Coating

    A view through a window in the Optical Manufacturing Group's 72-in. coater shows an optic (SPHR10) in the upper left with plasma and evaporation sources below. Dual-plasma sources are used to provide stress control for optical coatings used in vacuum. The 0.8-m high-reflector mirror is the first production optic coated with the plasma-assist technology at LLE, and it will be used in the short-pulse transport section of OMEGA EP.

    03/01/10

  • Carolyn Kuranz, Research Scientist, and Christine Krauland, Doctoral Student
    Carolyn Kuranz, Research Scientist, and Christine Krauland, Doctoral Student

    Radiation Hydrodynamics Research
    on OMEGA

    OMEGA is used by many researchers from around the world to perform cutting-edge research and to train highly talented students. Shown are Carolyn Kuranz, Research Scientist, and Christine Krauland, Doctoral Student, from the University of Michigan's Center for Radiative Shock Hydrodynamics (CRASH). Under the guidance of R. Paul Drake, these researchers routinely perform experiments in support of their program.

    02/15/10

  • Gate Valve Electrical Drive
    Gate Valve Electrical Drive

    Gate Valve Electrical Drive

    The Gate Valve Electrical Drive (GVED) was recently developed at LLE. The GVED improves safety by removing the air cylinder's stored energy potential and prevents possible sudden changes in physical location. Although the required power to run the drive is less than 15 mW, the GVED produces 2910 ft-lb of torque. For comparison, a heavy-duty-series 600HP tractor-trailer produces only 1850 ft-lb of torque.

    02/01/10

  • LLE Counterintelligence Program
    LLE Counterintelligence Program

    DOE/LLE Counterintelligence Program

    To assist LLE in forging an invigorated Counterintelligence Program we announce that the Brookhaven Field Office, which serves the DOE's Northeast Region, will be represented by Deputy Senior Counterintelligence Officer Phillip V. Sarcione, Senior Counterintelligence Officer Randy M. Biegelman, and Counterintelligence Officer Paul M. Moskal, pictured respectively above.

    1/25/10

  • Cryogenic Fill-Tube Target
    Cryogenic Fill-Tube Target

    Cryogenic Fill-Tube Target for
    Fast Ignition Experiments

    A 900-µm-diameter polymer target with an embedded gold cone is filled with liquid D2 via a thin support tube connected to a fuel reservoir (left). The target will be studied in the Cryogenic Fill-Tube Target Facility. The objective is to form a uniformly-thick 100-µm solid fuel layer on the inside of the plastic capsule by overcoming the thermal distortion caused by the gold cone.

    1/11/10

  • Components for the Moving Cryostat Upgrade
    Components for the Moving Cryostat Upgrade

    Components for the
    Moving Cryostat Upgrade

    Gold-plated copper components for the Moving Cryostat Upgrade have highly polished surfaces to create a low surface emissivity. This reduces the radiation heat load to the cold head and reduces the need for multi-layer insulation.

    12/22/09

  • Nuclear Diagnostic Inserter
    Nuclear Diagnostic Inserter

    Nuclear Diagnostic Inserters

    The Nuclear Diagnostic Inserter (NDI) is used in conjunction with the Magnetic Recoil Spectrometer to insert CD or CH foils, which provide a particle spectrum that is used to infer target areal density. These new NDI's will be used to insert wedged range filter modules for various experiments.

    12/08/09

  • Touring OMEGA
    Touring OMEGA

    Top NNSA Official Visits LLE

    Brigadier General Garrett Harencak, NNSA principal assistant deputy administrator for military application, toured the Omega Laser Facility less than one week after researchers highlighted recent advances in NNSA-sponsored high-energy-density physics research at the 51st Annual Meeting of the American Physical Society, Division of Plasma Physics (APS/DPP).

    11/24/09

  • Working on OMEGA EP sidelighter
    Working on OMEGA EP sidelighter

    OMEGA EP Sidelighter
    Mechanical Assembly

    The mechanical assembly of the antechamber on the OMEGA EP sidelighter has been completed. Shown is a partially assembled service trailer that includes two cable carriers. The first carrier allows the trailer and second carrier to travel half way. The trailer then stops where the second carrier extends, allowing the OAPI-M to reach its position inside the OMEGA EP target chamber.

    11/10/09

  • ILOW 2009 Participants
    ILOW 2009 Participants

    International Laser Operations Workshop

    LLE hosted the 7th International Laser Operations Workshop in October 2009. Laser operations staff from the major U.S., U.K., and French laboratories exchanged ideas to address common issues and safety concerns, and collaborated to develop best practices to benefit all Laser Facilities. Delegates from LLNL, LANL, SNL, AWE, RAL, CEA, and LULI participated.

    10/27/09

  • OMEGA EP Four Beams Firing
    OMEGA EP Four Beams Firing

    Amplifier Housings Light Up as OMEGA EP Fires

    Looking southwest from the target area structure, amplifier housings are lit as OMEGA EP's four beams fire. With no bay lights on, the beamline structures are illuminated by the flash of light that energizes the laser amplifiers. The grating compressor chamber can be seen in the shadows at the right.

    10/13/09

  • Participants in the 2009 LLE Summer High School Research Program
    Participants in the 2009 LLE Summer High School Research Program

    Summer High School Research Program

    Participants in the 2009 LLE Summer High School Research Program with program director, Dr. Stephen Craxton. The Summer High School Research Program challenges high school students to explore research topics and careers under the tutelage of LLE scientists, engineers, and staff in a state-of-the-art environment. This year's program concluded last month with student presentations of their results at a symposium in the laboratory.

    09/29/09

  • Grating Photomask
    Grating Photomask

    Grating Photomask

    Colorful spectral dispersion is observed through diffraction from a multilayer-dielectric grating. Several large-aperture diffraction gratings are used to compress the pulse width of the OMEGA EP short-pulse laser beams. LLE is investigating high-damage-threshold grating designs and manufacturing processes to increase the energy delivered to target.

    09/14/09

  • Final phase of installing the Grating Inspection System.
    Final phase of installing the Grating Inspection System.

    OMEGA EP Grating Inspection System

    The final phase of installing the Grating Inspection System is shown inside OMEGA EP's Grating Compression Chamber. Two GIS systems will be used to perform detection scans of damage sites on both upper and lower tiled-grating assemblies fourth TGA. The image of TGA1 (left) is shown reflected off the Fizeau Selection Mirror (right).

    08/31/09

  • Students in the OMEGA EP Viewing Gallery
    Students in the OMEGA EP Viewing Gallery

    Touring LLE

    Students taking a tour of LLE look at the OMEGA EP Laser Bay from the Viewing Gallery. The students are working on the Multi-Channel Carbon Counter and studying under Dr. Stephen Padalino of SUNY Genesseo.

    08/11/09

  • 360° panoramic view of OMEGA EP
    360° panoramic view of OMEGA EP

    All Eyes on OMEGA EP

    A panoramic view shown in 360 degrees of the OMEGA EP Target Bay facing the Target Area Structure.

    07/28/09

  • Plymouth Grating Laboratory
    Plymouth Grating Laboratory

    Evaluating the Grating Tile

    Full-aperture interferometry is an essential tool in characterizing large-aperture optics for OMEGA and OMEGA EP components. A grating tile manufactured by Plymouth Grating Laboratory (PGL) is shown being aligned for evaluation on a Zygo 18-in. phase-shifting interferometer and is also seen in the high-reflector, flat mirror.

    07/14/09

  • Lead being poured into a form
    Lead being poured into a form

    Fabricating the Multi-Channel Carbon Counter

    After being poured into a form for the counter's side shield, molten lead at 800°F is shown being "puddled," a process originally used to make steel from pig iron. During the process, cooled lead is heated, or torched in this case, liquifying it to sink and fill in any trapped air holes. At the same time, additional molten lead is being added to maintain the volume.

    06/22/09

  • Dual Plasma Source System
    Dual Plasma Source System

    Dual Plasma Source System

    The dual plasma source system is used in conjunction with an electron-beam deposition process in order to densify coatings and modify film stress, resulting in coatings with broad environmental stability. This process is currently under development in the Optical Manufacturing Group at LLE, and is shown here being tested with an argon plasma in the 72-inch coating chamber.

    06/09/09

  • Omega Laser Facility Users Group Workshop
    Omega Laser Facility Users Group Workshop

    First Omega Laser Facility Users Group Workshop

    The first Omega Laser Users Group Workshop, held April 29 – May 1, 2009 attracted 110 researchers from 29 universities and laboratories and four countries. The purpose of the workshop was to facilitate communication and exchanges among the individual users and between the users and LLE. Almost fifty presentations highlighting on-going and proposed research experiments were given, most of which were presented by the thirty-two students and postdoctoral candidates in attendance.

    05/22/09

  • LLE Featured in National Geographic
    LLE Featured in National Geographic

    LLE Featured in National Geographic

    National Geographic magazine's special issue: Energy for Tomorrow: Repowering the Planet features an image from inside the OMEGA target chamber during a target shot. Repowering the Planet focuses on the current energy landscape and what it might look like in the future.

    05/05/09

  • OMEGA target chamber during an NLUF experiment
    OMEGA target chamber during an NLUF experiment

    NLUF Jet Target

    Photograph taken inside the OMEGA target chamber during an NLUF experiment led by a team from MIT's Plasma Science and Fusion Center. Employing proton radiography, the experiment studied jet formation using the target featured in the Quick Shot posted 3/25/09.

    04/21/09

  • Ambulance outside LLE
    Ambulance outside LLE

    LLE Blood Drive

    The LLE held a blood drive for the Red Cross. In all, 43 employees presented themselves for blood donation, resulting in more than double the expectation of usable units of blood.

    04/06/09

  • Target used for an OMEGA NLUF experiment
    Target used for an OMEGA NLUF experiment

    NLUF Jet Target

    A target used for an OMEGA NLUF experiment carried out by a team from MIT's Plasma Science and Fusion Center to study jet formation using proton radiography. The large, 20-mm-diameter, conical structure is used to shield the diagnostic systems from x-ray radiation generated by the laser beams that are used to form the jet in the foam cylinder behind the cone.

    03/25/09

  • LLE Engineer and MIT graduate student remove the proton-sensitive recording media from the MRS.
    LLE Engineer and MIT graduate student remove the proton-sensitive recording media from the MRS.

    Magnetic Recoil Spectrometer

    An LLE Laboratory Engineer and MIT graduate student remove the proton-sensitive recording media from the Magnetic Recoil Spectrometer, the primary fuel compression diagnostic for OMEGA cryogenic DT experiments.

    03/10/09

  • Discovery Channel Filming in OMEGA Laser Bay
    Discovery Channel Filming in OMEGA Laser Bay

    Discovery Channel at LLE

    A crew from the Discovery Channel prepares to film in the OMEGA Laser Bay. The director of photography is crouched down looking at the real-time feed, and the motion-control operator raises the camera into the air with the sound technician next to him.

    02/24/09

  • OMAN's Last NIF Polarizer Run
    OMAN's Last NIF Polarizer Run

    OMAN's Last NIF Polarizer Run

    The last of the spare NIF polarizer optics are coated in the 72-inch chamber. This marks the completion of an eight-year NIF large-optic coating production phase.

    02/06/09

  • Semifinalists in the Intel Science Talent Search 2009
    Semifinalists in the Intel Science Talent Search 2009

    Two 2008 LLE Summer High School Research Program Participants Named Intel Semifinalists

    Rachel Kurchin and Jay Amin were named semifinalists in the Intel Science Talent Search 2009. Kurchin, shown left with advisors Stephen Craxton and Mark Wittman, is a student at The Harley School. Amin, shown right with advisor Christophe Dorrer, is a student at Rush Henrietta Senior High School. The Science Talent Search is often referred to as the "Junior Nobel Prize" and is the country's most prestigious science scholarship competition.

    01/16/09

  • Commissariat à l'Énergie Atomique (CEA) team
    Commissariat à l'Énergie Atomique (CEA) team

    First Joint OMEGA EP Experiments Between LLE and CEA/DIF

    Commissariat à l'Énergie Atomique (CEA) team (left to right: Oliver Landoas, Jean-Luc Bourgade, and Cédric Courtois from DAM lle de France, Bruyères le Châtel) participating on the first joint experiments on OMEGA EP for characterizing MeV photon generation under short pulse (0.6 ps) and powerful (0.5 PW) laser irradiation on a solid target (Au).

    01/06/09

  • Neutron Time-of-Flight Detector
    Neutron Time-of-Flight Detector

    Neutron Time-of-Flight Detector in Fabrication

    The lower housing of a neutron time-of-flight (nTOF) detector is shown shortly after being machined at LLE. The completed nTOF detector will be used to obtain ion temperatures from integrated fast-ignition experiments on OMEGA.

    12/09/08

  • Team from University of Michigan
    Team from University of Michigan

    Radiative Shock Hydrodynamics Experiments

    A team from the University of Michigan carried out experiments on radiative shock hydrodynamics on OMEGA in October

    11/04/08

  • OMEGA EP Target Shot
    OMEGA EP Target Shot

    OMEGA EP Raises the Bar for Short-Pulse Energy on Target

    On September 16, 2008, an OMEGA EP beamline irradiated a target with an energy of 1415 J in an 11-ps laser pulse. This energy is more than a factor of two higher than any previously obtained with a short-pulse laser system.

    10/01/08

  • Inertial Confinement Fusion: An Introduction
    Inertial Confinement Fusion: An Introduction

    Inertial Confinement Fusion: An Introduction

    The LLE has created a book for readers of all backgrounds to learn about and share the excitement of inertial fusion research. Visit the Publications page for more details and to download a copy.

    09/12/08

  • Rachel Kurchin examines a spherical target
    Rachel Kurchin examines a spherical target

    Summer Research Program

    High school student Rachel Kurchin (The Harley School) examines a spherical target inside a glass hohlraum. Rachel is one of 15 students participating in this year's LLE Summer High School Research Program. See next month's Around the Lab section for an in-depth look at the students' projects.

    08/22/08

  • Off-Axis Parabolic Optic
    Off-Axis Parabolic Optic

    Off-Axis Parabolic Optic

    The off-axis parabolic optic was installed onto the off-axis parabola inserter/manipulator at OMEGA port H7. The optic was installed for joint OMEGA and OMEGA EP shots in support of advanced ignition development.

    08/11/08

  • OMEGA EP Sidelighter
    OMEGA EP Sidelighter

    OMEGA EP Sidelighter Path is Active

    The second set of beam-delivery optics to the OMEGA EP target chamber was aligned and initial target shots were taken during the week of June 30. The OMEGA EP target chamber is shown illuminated by the second-harmonic (527-nm-wavelength) green light generated when the high-intensity (> 100 J in a 10-ps pulse) infrared laser hit the target. The final focusing optic, an off-axis parabola, is seen on the right-hand side of the image.

    07/28/08

  • OMEGA EP Large Aperture Grating Tiling Development Team
    OMEGA EP Large Aperture Grating Tiling Development Team

    OMEGA EP Large Aperture Grating Tiling Development Team

    A view of the entire OMEGA EP upper compressor inside the grating compressor chamber (GCC). The four tiled-grating assemblies (TGA's) are prominent in the right half of the picture. In the inset is the team that fielded two full-scale tiled-grating compressors in the GCC on OMEGA EP. Both compressors achieved less than 1ps pulse width.

    07/16/08

  • Steven J. Louck
    Steven J. Louck

    Captain Steven J. Loucks Retires

    On Monday, June 23, 2008, coworkers and friends gathered to celebrate the retirement of Captain Steven J. Loucks, Deputy Director of the Laboratory, Director of the Engineering Division, and OMEGA Facility Director. Loucks has been with LLE since 1990.

    07/07/08

  • NIF Preamplifier Module (PAM) Arrives at LLE
    NIF Preamplifier Module (PAM) Arrives at LLE

    NIF Preamplifier Module (PAM) Arrives at LLE

    The NIF PAM arrived at LLE for integration into the OMEGA EP Laser System

    05/21/08