Abstract We present experimental results of the stimulated Raman backscattering instability (BSRS) in an ultrashort intense (45fs, 5.7×1017Wcm-2) laser pulse interacting with an optically ionized helium gas. We have studied the stimulated Raman backscattering reflectivity and the phenomenon of the transition from strongly coupled BSRS to weakly coupled BSRS. We have obtained a good agreement between our experimental results and the theory of BSRS.
Received: 28 March 2001
Revised: 09 September 2001
Accepted manuscript online:
(Efficiency, stability, gain, and other operational parameters)
Fund: Project supported by the National Natural Science Foundation of China (Grant No. 69678012), and the National High Technology Development Programme of China (Grant No. 863-416-3).
Cite this article:
Tang Yu-Hui (汤宇晖), Han Shen-Sheng (韩申生), Zhang Chang-Xue (张长学), Wu Yan-Qing (吴衍青), Cheng Jing (程静), Zhong Fang-Chuan (钟方川), Zhu Yu-Zhe (朱喻哲), Xu Zhi-Zhan (徐至展) Stimulated Raman backscattering from an ultrashort laser interacting with underdense plasmas 2002 Chinese Physics 11 50
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