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Title: Noise sources and competition between stimulated Brillouin and Raman scattering: A one-dimensional steady-state approach

A 1D steady-state model is developed to deal with stimulated scattering processes. The volume and boundary noise sources for scattered light are discussed in detail. Our results indicate that the boundary noise sources may play a significant role in estimating the reflectivity of stimulated Brillouin scattering (SBS) and stimulated Raman scattering (SRS). With the capability of our model to deal with broadband scattered light, we find that pump depletion could be the main reason to the anti-correlation between SBS and SRS versus electron density observed in experiments. A simple method is proposed to phenomenologically include the effect of nonlinear saturation mechanisms in our model and reasonable results are obtained.
Authors:
 [1] ;  [2] ;  [3] ; ; ;  [1]
  1. Department of Modern Physics, University of Science and Technology of China, Hefei, Anhui 230026 (China)
  2. (China)
  3. Research Center of Laser Fusion, China Academy of Engineering Physics, Mianyang, Sichuan 621900 (China)
Publication Date:
OSTI Identifier:
22220615
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physics of Plasmas; Journal Volume: 20; Journal Issue: 9; Other Information: (c) 2013 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; BRILLOUIN EFFECT; ELECTRON DENSITY; NOISE; NONLINEAR PROBLEMS; PLASMA DENSITY; RAMAN EFFECT; REFLECTIVITY; STRONTIUM SULFIDES; VISIBLE RADIATION