Smoothing by spectral dispersion(SSD) leads to considerable improvement on laser-irradiation uniformity in far field for fusion lasers. Phase modulation in time and spectral angular dispersion(SAD) across the beam introduced by SSD will affect the stimulated rotational Raman scattering(SRRS) gain in the near field. This paper focuses on the influence of SAD on SRRS gain under different laser conditions. Results show that the SAD will aggravate the generation of SRRS when the laser initial additional phase i...
【英文摘要】
Smoothing by spectral dispersion(SSD) leads to considerable improvement on laser-irradiation uniformity in far field for fusion lasers. Phase modulation in time and spectral angular dispersion(SAD) across the beam introduced by SSD will affect the stimulated rotational Raman scattering(SRRS) gain in the near field. This paper focuses on the influence of SAD on SRRS gain under different laser conditions. Results show that the SAD will aggravate the generation of SRRS when the laser initial additional phase i...
【基金】
Project supported by the State Key Program of the National Natural Science Foundation of China(Grant No.61138005);
the National Natural Science Foundation of China(Grant No.61008004)
【更新日期】
2014-04-15
【分类号】
O437.3
【正文快照】
1.IntroductionFor laser fusion and many other applications,some high-energy and high-power beams must propagate over long airpaths,resulting in the generation of the unwanted nonlinear ef-fect of stimulated rotational Raman scattering(SRRS),whichlimits th
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