LLE Review 76
Highlights
LLE Review Volume 76 begins with reports on two new subsystems in the OMEGA laser facility: (1) a highly stable, diode-pumped Nd:YLF master oscillator and (2) a highly stable negative-feedback controlled regenerative amplifier. Another system development is the expansion of the pulse-shape bandwidth of OMEGA’s driver line from approximately 3 GHz to over 5 GHz. Calculations of near-field intensity modulations in high-intensity laser beams due to self- and cross-phase modulation of OMEGA laser beams emerging from KDP polarization-smoothing wedges have shown that intensity modulations are not expected to be a significant source of intensity modulation. An x-ray radiographic system for measuring mass modulations in planar laser-driven targets has been characterized to measure perturbations imprinted on targets by laser nonuniformity. Observations of stimulated Raman scattering (SRS) have been at odds with theoretical predictions but now have a viable explanation in terms of calculated collisionless damping rates found to be much slower for plasma waves confined within small-radius filaments. The Summer High School Research Program Report, the Laser Facility Report, and the National Laser Users’ Facility News conclude this volume.
- Contents/In Brief
- Highly Stable, Diode-Pumped Master Oscillator for the OMEGA Laser Facility
- Regenerative Amplifier for the OMEGA Laser System
- Transient Bandwidth Analysis of Photoconductive Microwave Switches Implemented in the OMEGA Pulse-Shaping System
- Simulations of Near-Field Intensity Modulations in High-Intensity Laser Beams due to Self- and Cross-Phase Modulation Between Orthogonally Polarized Laser Beams Emerging from a Diamond-Turned KDP Wedge
- X-Ray Radiographic System Used to Measure the Evolution of Broadband Imprint in Laser-Driven Planar Targets
- Collisionless Damping of Localized Plasma Waves in Laser-Produced Plasmas and Application to Stimulated Raman Scattering in Filaments
- LLE’s Summer High School Research Program
- FY98 Laser Facility Report
- National Laser Users Facility News
- Publications and Conference Presentations