Measurement of Raman scattering gain coefficient in large-aperture DKDP crystals irradiated by 351 nm pulses

Han Wei; Xiang Yong; Wang Fang; Zhou Lidan; Feng Bin; Li Fuquan; Zhao Junpu; Zheng Kuixing; Zhu Qihua; Wei Xiaofeng; Zheng Wanguo; Gong Mali

doi:10.11884/HPLPB201628.021005

Volume 28 Issue 02

Jan. 2016

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Article Navigation > High Power Laser and Particle Beams > 2016 > 28(02): 021005

Wang Feng, Zhang Xing, Li Yulong, et al. Progress in high time- and space-resolving diagnostic technique for laser-driven inertial confinement fusion[J]. High Power Laser and Particle Beams, 2020, 32: 112002. doi: 10.11884/HPLPB202032.200136

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Han Wei, Xiang Yong, Wang Fang, et al. Measurement of Raman scattering gain coefficient in large-aperture DKDP crystals irradiated by 351 nm pulses[J]. High Power Laser and Particle Beams, 2016, 28: 021005. doi: 10.11884/HPLPB201628.021005

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Measurement of Raman scattering gain coefficient in large-aperture DKDP crystals irradiated by 351 nm pulses

doi: 10.11884/HPLPB201628.021005

1.
Department of Precision Instruments and Mechanology,Tsinghua University,Beijing 100084,China;
2.
Research Center of Laser Fusion,CAEP,Mianyang 621900,China

Received Date: 2015-10-15
Rev Recd Date: 2015-11-16
Publish Date: 2016-02-15

Abstract

Abstract

Transverse stimulated Raman scattering (TSRS) gain coefficient in a large aperture 65% deuterated potassium dihydrogen phosphate (DKDP) is measured at 351 nm. The measurement involves the use of an optical fiber sensor system to detect Raman scattering light in the DKDP crystal. A Raman scattering gain coefficient of 0.109 cm/GW is obtained and will be used to set upper limit of the DKDP crystals in our laser facility to avoid the TSRS induced energy loss and laser damage. The effect of bulk damage on growth behavior of TSRS is also examined and it is found that bulk damage has little impact on the TSRS growth. Thus the influence of bulk damage on the measurement of TSRS gain coefficient can be ignored.
- transverse stimulated Raman scattering,
- gain coefficient,
- deuterated potassium dihydrogen phosphate,
- UV laser

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