Suppression of transverse stimulated Raman scattering in large-aperture potassium dihydrogen phosphate crystals by pulse stacking

Suppression of transverse stimulated Raman scattering in large-aperture potassium dihydrogen phosphate crystals by pulse stacking
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脉冲叠加抑制大孔径磷酸二氢钾晶体横向受激拉曼散射

DOI:
10.1017/s0263034619000053
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发表时间:
2019-03
影响因子:
0.9
通讯作者:
Sun Yongzhi
Sun Yongzhi
中科院分区:
物理与天体物理4区
文献类型:
--
作者:
Fan Xinmin;Li Sensen;Zhang Jianxin;Huang Xiaodong;Wang Chunyan;Li Hourong;Sun Yongzhi

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大口径磷酸二氢钾(KDP)晶体中横向受激拉曼散射(TSRS)的有效抑制是强激光研究和应用中的重要科学技术问题。在这项工作中,提出了一种方法来抑制TSRS使用脉冲堆积。该方法对TSRS有明显的抑制作用,且子脉冲数越多,抑制效果越明显,当叠加脉冲数为4个子脉冲时,KDP晶体中3ω激光的阈值强度增长率可达1.9左右。这种抑制效应归因于相邻子脉冲的偏振方向彼此垂直的事实。该方法可用于抑制其他非线性效应,包括大口径光学器件中的横向受激布里渊散射和长空气路径中的受激旋转拉曼散射。
Effective suppression of transverse stimulated Raman scattering (TSRS) in a large-aperture potassium dihydrogen phosphate (KDP) crystal is an important scientific and technical problem in high-intensity laser research and applications. In this work, a method to suppress TSRS using pulse stacking is proposed. The method suppresses TSRS significantly, with greater numbers of subpulses producing more obvious suppression effects, and the threshold intensity growth rate of the 3ω laser in the KDP crystal reaches up to about 1.9 when the stacked pulse contains four subpulses. This suppression effect is attributed to the fact that the polarization directions of adjacent subpulses are perpendicular to each other. The method can be used to suppress other nonlinear effects, including transverse stimulated Brillouin scattering in large-aperture optical devices and stimulated rotational Raman scattering in long air paths.
DOI: 10.1103/physreva.19.2304
发表时间: 1979-06
期刊: Physical Review A
影响因子: 2.9
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