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
Office of the Director

Laser's 50th Anniversary

SPIE interview with LLE Director
Dr. Robert L. McCrory

Users' Guide

The Omega
Laser Facility Users' Guide

is now available for download here.

Quick Shot

Alt Text of the Image

OMEGA EP 4ω Probe Diagnostic System

The fourth-harmonic (263-nm) probe diagnostic system provides the ability to study the plasma conditions for a variety of high-energy-density (HED) and basic physics studies. Located on the upper deck of the OMEGA EP Target Area Structure, the inset shows a wide-field view of the diagnostic's location along with Senior Laboratory Engineer Jay Brown accessing the diagnostic at the enclosure.

Past Quick Shots

Around the Lab

Commissioning an X-Ray Detector System for Spectral Analysis of Tritium-Filled Targets

LLE uses glass and plastic targets filled with deuterium–tritium mixtures (DT) for research into inertial confinement fusion experiments. The 60-beam OMEGA Laser System is employed to implode these targets. Because targets require pressurizing to tens of atmospheres without crushing the fragile, thin-wall shells, the permeation-filling process can take several days. Typically, it takes five or six permeation time constants to fill targets to the desired pressure. An x-ray detection system (XDS), originally developed to measure bremsstrahlung of tritium β decay from the surface of metals, has been modified to nondestructively measure the pressure of DT fuel inside a target just prior to a shot.

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