Stimulated Brillouin processes in crystals and glasses

Technical Report · Sat Feb 01 04:00:00 EST 1992

OSTI ID:7273726

Faris, G W; Hickman, A P ^[1]

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1. SRI International, Menlo Park, CA (United States). Molecular Physics Lab.

The basic physics and material properties needed to describe and predict the Brillouin gain for a variety of materials have been investigated. Lawrence Livermore National Laboratory (LLNL) has identified transverse stimulated Brillouin scattering (SBS) as an important limiting mechanism in high power laser fusion systems. At sufficiently high laser intensities, SBS drives acoustic vibrations that can damage optical components. SRI has performed measurements and developed the corresponding theory for stimulated Brillouin gain spectroscopy in anisotropic crystals. Absolute Brillouin steady-state gain coefficients, linewidths, and frequency shifts have been determined at 532 nm for a number of optical materials of interest to LLNL. This knowledge can be used to select optical materials and devise suppression schemes that will allow much higher laser fluences to be used in laser fusion.

• Research Organization: Lawrence Livermore National Lab., CA (United States); SRI International, Menlo Park, CA (United States)
• Sponsoring Organization: DOE; USDOE, Washington, DC (United States)
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 7273726
• Report Number(s): UCRL-JC-110478; ON: DE92019549
• Country of Publication: United States
• Language: English

Related Subjects

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75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
BRILLOUIN EFFECT
COHERENT SCATTERING
CONFINEMENT
CRYSTALS
DOCUMENT TYPES
GLASS
INERTIAL CONFINEMENT
LASER MATERIALS
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MATERIALS
NEODYMIUM LASERS
PLASMA CONFINEMENT
PROGRESS REPORT
SCATTERING
SOLID STATE LASERS
SPECTROSCOPY