Numerical modelling of the suppression of stimulated Brillouin scattering due to finite laser bandwidth

Conference · Wed Apr 01 04:00:00 EST 1992

OSTI ID:7176003

Dixit, S N

We present numerical simulations of transverse stimulated Brillouin scattering (SBS) in large aperture optical elements and investigate its suppression due to finite laser bandwidth. A specific model for the laser bandwidth, namely, a sinusoidal phase modulation of the electric field, is considered. Our calculations indicate that bandwidths larger than the SBS linewidth lead to significant reduction in the SBS gain. We also investigate the dependence of the SBS gain on the modulation frequency and find that for a fixed overall bandwidth, a modulation frequency of the order of the SBS linewidth leads to an optimal reduction of the SBS gain.

• Research Organization: Lawrence Livermore National Lab., CA (United States)
• Sponsoring Organization: DOE; NATO; USDOE, Washington, DC (United States); North Atlantic Treaty Organization, Brussels (Belgium)
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 7176003
• Report Number(s): UCRL-JC-107973; CONF-920124--27; ON: DE92018064; CNN: 0375/88
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
426002* -- Engineering-- Lasers & Masers-- (1990-)
661300 -- Other Aspects of Physical Science-- (1992-)
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
APERTURES
BRILLOUIN EFFECT
COHERENT SCATTERING
ELECTROMAGNETIC RADIATION
FREQUENCY MODULATION
FUNCTIONS
LASER RADIATION
MODULATION
NUMERICAL SOLUTION
OPENINGS
OPTICS
RADIATIONS
SCATTERING
SPECTRAL DENSITY
SPECTRAL FUNCTIONS