scholarly journals Competition between the stimulated Raman and Brillouin scattering under the strong damping condition

2013 ◽  
Vol 31 (2) ◽  
pp. 203-209 ◽  
Author(s):  
L. Hao ◽  
Z. J. Liu ◽  
X. Y. Hu ◽  
C. Y. Zheng
Keyword(s):  
Raman Scattering ◽  
Stimulated Raman Scattering ◽  
Brillouin Scattering ◽  
Interaction Model ◽  
Wave Interaction ◽  
Strong Damping ◽  
Stimulated Brillouin ◽  
Theoretical Results ◽  
Inhomogeneous Condition ◽  
Stimulated Raman

AbstractIn this paper, we discuss the competition between the stimulated Raman scattering (SRS) and stimulated Brillouin scattering (SBS) instabilities under the strong damping condition. Based on a five-wave interaction model, relations of the stationary backscattering reflectivity between SRS and SBS are deduced in the case of homogeneous plasmas. Developments of the two coexistent instabilities are simulated with different parameters. The density and the temperature of plasma are found to be important in determining which instability dominates the backscattering in the regime of competition. Furthermore, the influence of inhomogeneous condition to the pattern of competition is analyzed. Numerical results consist with our theoretical results.

Energy fraction measurements of stimulated Brillouin scattering and stimulated Raman scattering on Shenguang-Ⅲ prototype laser facility

2010 ◽  
Vol 22 (8) ◽  
pp. 1891-1895 ◽  
Author(s):  
李志超 Li Zhichao ◽  
张小丁 Zhang Xiaoding ◽  
杨冬 Yang Dong ◽  
郑坚 Zheng Jian ◽  
刘慎业 Liu Shenye ◽  
...  
Keyword(s):  
Raman Scattering ◽  
Stimulated Raman Scattering ◽  
Brillouin Scattering ◽  
Stimulated Brillouin Scattering ◽  
Energy Fraction ◽  
Laser Facility ◽  
Stimulated Brillouin ◽  
Stimulated Raman

scholarly journals Inhibition of stimulated Raman scattering due to the excitation of stimulated Brillouin scattering

2017 ◽  
Vol 24 (9) ◽  
pp. 092116 ◽  
Author(s):  
Yao Zhao ◽  
Lu-Le Yu ◽  
Su-Ming Weng ◽  
Chuang Ren ◽  
Chuan-Sheng Liu ◽  
...  
Keyword(s):  
Raman Scattering ◽  
Stimulated Raman Scattering ◽  
Brillouin Scattering ◽  
Stimulated Brillouin Scattering ◽  
Stimulated Brillouin ◽  
Stimulated Raman

Stimulated Brillouin scattering enhanced by stimulated Raman process near the quarter-critical density

2021 ◽  
Author(s):  
Zhanjun Liu ◽  
Qiang Wang ◽  
Bin Li ◽  
Jiwei Li ◽  
Li-hua Cao ◽  
...  
Keyword(s):  
Raman Scattering ◽  
Stimulated Raman Scattering ◽  
Brillouin Scattering ◽  
Second Harmonic ◽  
Scattered Light ◽  
Incident Light ◽  
Critical Density ◽  
Stimulated Brillouin Scattering ◽  
Stimulated Brillouin ◽  
Stimulated Raman

Abstract Stimulated Raman scattering can occur near the quarter critical density in direct-drive fusions, and the frequency of Raman scattered light is about half of the incident light frequency. The second harmonic of the Raman scattered light can be produced due to the inhomogeneity density profile. It can serve as the seed of stimulated Brillouin scattering (SBS). When the second harmonic of stimulated Raman scattering light propagates against the incident light, some components will match to the frequency of backward SBS and SBS is induced. Thus SBS could be enhanced greatly.

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