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Proceedings Paper

Research on the cross polarization wave generation based on gadolinium gallium garnet crystal
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Paper Abstract

To obtain seed pulses of large energy, high contrast and broad spectral bandwidth for the high power laser system, a new cross-polarized wave (XPW) generator based on the gadolinium gallium garnet (GGG) crystal is designed. For the injected fundamental wave (FW) pulses exceeding tens of millijoule, the output XPW characteristics of conversion efficiency, spectral broadening and contrast improvement are theoretically analyzed. We also investigated the influence of spatial distribution characteristics of the injected chirped FW pulses on the output XPW. With incident FW pulses of 8 order super gaussian spatial profile for instance, conversion efficiency of ~73%, spectral broadening ratio (SBR) of ~2.7 (from 40nm to 108nm) and contrast boost by >7 orders of magnitude can be obtained. The impact of the FW spatial modulation on XPW was sensitive to the modulation depth, which is significant for spatial quality control of the laser beam in high power laser systems.

Paper Details

Date Published: 19 November 2019
PDF: 11 pages
Proc. SPIE 11181, High-Power Lasers and Applications X, 1118106 (19 November 2019); doi: 10.1117/12.2536664
Show Author Affiliations
Shunhua Yang, Shanghai Institute of Optics and Fine Mechanics (China)
Univ. of the Chinese Academy of Sciences (China)
Xinglong Xie, Shanghai Institute of Optics and Fine Mechanics (China)
Ziruo Cui, Shanghai Institute of Optics and Fine Mechanics (China)
Univ. of the Chinese Academy of Sciences (China)
Xiao Liang, Shanghai Institute of Optics and Fine Mechanics (China)
Qingwei Yang, Shanghai Institute of Optics and Fine Mechanics (China)
Ping Zhu, Shanghai Institute of Optics and Fine Mechanics (China)
Meizhi Sun, Shanghai Institute of Optics and Fine Mechanics (China)
Jianqiang Zhu, Shanghai Institute of Optics and Fine Mechanics (China)


Published in SPIE Proceedings Vol. 11181:
High-Power Lasers and Applications X
Ruxin Li; Upendra N. Singh; Shibin Jiang, Editor(s)

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