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受激布里渊散射中的相位跃变
引用本文:杨爱玲,杨经国,丁磊,李明中,张小民,满永在.受激布里渊散射中的相位跃变[J].中国激光,2001,28(8):732-734.
作者姓名:杨爱玲  杨经国  丁磊  李明中  张小民  满永在
作者单位:1. 青岛海洋大学物理系
2. 四川大学物理系
3. 中国工程物理研究院核物理与化学研究所
摘    要:报道了受激布里渊散射 (SBS)过程中的相位跃变 ,实测了相位跃变的几率随入射脉冲能量的关系。结果表明 ,在CCl4 介质中 ,相位跃变的几率约为 2 0 %。即使在饱和能量下 ,SBS的相位跃变依然存在。相位跃变干扰了Stokes光的相位 ,减小了相干长度 ,增加了光谱宽度。相位跃变的产生中断了SBS的相位共轭过程 ,造成SBS的相位共轭度下降。

关 键 词:受激布里渊散射  相位共轭度  相位跃变
收稿时间:2000/1/17

Phase Jump in the Process of Stimulated Brillouin Scattering
YANG Ai ling,YANG Jing guo,DING Lei,LI Ming zhong,ZHANG Xiao ming,MAN Yong zai.Phase Jump in the Process of Stimulated Brillouin Scattering[J].Chinese Journal of Lasers,2001,28(8):732-734.
Authors:YANG Ai ling  YANG Jing guo  DING Lei  LI Ming zhong  ZHANG Xiao ming  MAN Yong zai
Affiliation:YANG Ai ling 1 YANG Jing guo 2 DING Lei 3 LI Ming zhong 3 ZHANG Xiao ming 3 MAN Yong zai 3 1Department of Physics,Ocean University of Qingdao,Qingdao 266003 2Department of Physics,Sichuan University,Chengdu 610064
Abstract:This paper reported phase jumps in the process of Stimulated Brillouin Scattering. The jumped probability with the incident energy was measured. The result showed that the jumped probability in the medium CCl 4 is about 20%. Even if the incident energy is saturated, phase jumps still exist. Phase jumps disrupt the phase of the Stokes beam generated by SBS, therefore tend to decrease the coherence length, increase the spectral width of the Stokes signal, suspend the phase conjugation process and decrease the fidelity of phase conjugation.
Keywords:Stimulated Brillouin Scattering (SBS)  fidelity of phase conjugation  phase jumps
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