Welcome to LLE

The Laboratory for Laser Energetics (LLE) of the University of Rochester is a unique national resource for research and education in science and technology. LLE was established in 1970 as a center for the investigation of the interaction of intense radiation with matter. The National Nuclear Security Administration funds LLE as part of its Stockpile Stewardship Program.

Target being shot by a laser

Alumni Focus

Alumni Snapshot

Jeremy D. Schnittman

Jeremy Schnittman came to LLE as a summer high school intern (from Wilson Magnet High School in the Rochester City School District). Under the supervision of Stephen Craxton, Jeremy wrote, from scratch, a viewfactor program that modeled the uniformity in cylindrical hohlraums on Nova, OMEGA, and the National Ignition Facility (NIF). He became a semifinalist in the then Westinghouse Science Talent Search for this work.

Users' Guide

The Omega
Laser Facility Users' Guide

is available for download here.

Quick Shot

High School Students Present at the
11th Omega Laser Facility Users Group Workshop

This year's Omega Laser Facility Users Group Workshop included posters by two participants from LLE's 2018 Summer High School Research Program. Advised by program director Stephen Craxton, Anirudh Sharma (left) of Webster Schroeder High School presented a poster entitled “Optimization of Cone-in-Shell Targets for an X-Ray Backlighter at the National Ignition Facility." Anirudh is also a 2019 Regeneron Science Talent Search Scholar who in the inset is joined by Robert Heeter, a researcher from the Lawrence Livermore National Laboratory's National Ignition Facility (NIF) who proposed the cone-in-shell targets that Anirudh modeled. Anirudh will attend Cornell University. Katherine Glance (right) of Pittsford Sutherland High School, advised by Walter Shmayda and Matthew Sharpe (not pictured), presented a poster entitled “Using Palladium Hydride to Fill Inertial Confinement Fusion Targets." She will attend Dartmouth College. Summaries of their projects are available here.

Past Quick Shots

Around the Lab

Tunable OMEGA P9 (TOP9)
Beam Project at LLE

In both indirect- and direct-drive inertial confinement fusion (ICF) experiments, energy can be lost or misdirected when the laser beams cross with each other on their way to the target. This phenomenon, known as cross-beam energy transfer (CBET), scatters light from one beam to another, mediated by a plasma grating, and leads to beams giving up part of their energy to other beams. Splitting the OMEGA beams into three different groups, each with a separate laser wavelength (color), has been proposed because simulations modeling wavelength detuning have shown to limit the energy transferred between beams. In fact, wavelength detuning is predicted to recover much of the drive power currently lost to CBET on OMEGA.