scholarly journals SRS characteristics and its influence on SBS pulse compression in a fluorocarbon liquid

2017 ◽  
Vol 35 (1) ◽  
pp. 114-119 ◽  
Author(s):  
H. Yuan ◽  
Y. Wang ◽  
Z. Lu ◽  
Z. Liu ◽  
Z. Bai ◽  
...  
Keyword(s):  
Raman Scattering ◽  
Pulse Compression ◽  
Laser Intensity ◽  
Stimulated Raman Scattering ◽  
Brillouin Scattering ◽  
Laser System ◽  
Experimental Results ◽  
Frequency Shifts ◽  
Experimental Medium ◽  
Stimulated Brillouin

AbstractIn this paper, the occurrence of the stimulated Raman scattering (SRS) and its effects on stimulated Brillouin scattering (SBS) pulse compression in FC-40 are investigated. As the experimental medium, the characteristics of FC-40 are suitable for pulse compression. Firstly, the frequency shifts and the threshold of SRS in FC-40 are studied with a mode-locked laser system as pump source, without taking the SBS effect into account. On the basis of the experimental results, the competition between SRS and SBS as well as its effect on pulse compression is investigated. Results show that SRS gets higher gain and grows rapidly with the increase of the laser intensity by pump effect, which will result in decreasing of SBS energy reflection.

scholarly journals Análisis de los efectos dispersivos y no lineales de un canal óptico empleando métodos numéricos

Ingenius ◽  
2014 ◽  
pp. 5
Author(s):  
Arturo Peralta Sevilla ◽  
Milton Tipán Simbaña ◽  
Ferney Amaya Fernández
Keyword(s):  
Fourier Transform ◽  
Raman Scattering ◽  
Phase Modulation ◽  
Stimulated Raman Scattering ◽  
Brillouin Scattering ◽  
Single Mode ◽  
Single Mode Fiber ◽  
Cross Phase Modulation ◽  
Self Phase Modulation ◽  
Stimulated Brillouin

En este documento, presentamos el modelado de un canal de fibra óptica mediante la resolución de la Ecuación No Lineal de Schrödinger (NLSE). Se presentan las dos formas de solución para la NLSE: la forma analítica y la forma numérica empleando el método SSF (Split–Step Fourier Transform). En la simulación se consideran efectos lineales como la dispersión cromática y los efectos no lineales. Uno de los efectos no lineal es el efecto Kerr, del que se derivan los efectos de auto modulación fase (Self Phase Modulation, SPM) y modulación de fase cruzada (Cross Phase Modulation, XPM). Los métodos de solución son empleados para simular y visualizar los efectos de propagación a través de la fibra óptica. Se analizan los efectos de propagación para un escenario de red de acceso óptica con fibra mono–modo estándar (Single Mode Fiber, SMF), con longitudes de fibra de 20 y 40 km y tasas de bits entre 1,25 y 100 Gbps. De otro lado, son presentados los fenómenos no lineales como dispersión estimulada de Raman (Stimulated Raman Scattering, SRS) y dispersión estimulada de Brillouin (Stimulated Brillouin Scattering, SBS). Se presentan las ecuaciones para modelar SRS. Se presentan resultados de simulación de la amplificación Raman en un escenario seleccionado.

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 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.

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

scholarly journals Experimental observation of backscattered light based on different coherence between incident laser beams

2013 ◽  
Vol 1 (2) ◽  
pp. 94-97 ◽  
Author(s):  
Xiangfu Meng ◽  
Chen Wang ◽  
Honghai An ◽  
Guo Jia ◽  
Huazhen Zhou ◽  
...  
Keyword(s):  
Raman Scattering ◽  
Experimental Observation ◽  
Solid Angle ◽  
Stimulated Raman Scattering ◽  
Brillouin Scattering ◽  
Laser Beams ◽  
Incident Laser ◽  
The Difference ◽  
Stimulated Brillouin ◽  
The Given

AbstractRecent experimental results on NIF revealed a much higher stimulated Brillouin scattering (SBS) and stimulated Raman scattering (SRS) backscatter than expected; one possible reason was due to the coherence between incident laser beams. In our research, two laser beams (${\sim }1~\mathrm{ns} $, ${\sim }250~\mathrm{J} , 527~\mathrm{nm} $ in each one) with different coherent degrees between them from the SG-II facility were employed to irradiate an Au plate target; the backscatter of SBS and SRS in the range of the given solid angle had been measured. The results showed that it could change dramatically corresponding to the difference of the coherent degree between the two laser beams, and there was usually more intense backscatter the higher the coherent degree between the incident beams.

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