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Influence of the neodymium glass parameters on the amplified spontaneous emission in slab amplifier

Influence of the neodymium glass parameters on the amplified spontaneous emission in slab amplifier

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Abstract

Amplified spontaneous emission (ASE) causes the decrease of the inverted population density and the nonuniformity of gain in slab amplifier for high power laser systems. In this paper, a three dimension model, based on the data in SG-II, in which the residual reflection in the cladding and the ASE process are taken into consideration, is built to analyze the space distribution and time evolution of small signal gain coefficient using Monte Carlo algorithm and ray tracing. This model has been verified by comparing with the experimental data. The traverse size of slab is 68.2cm×36.3cm, which is usually decided by the clear aperture and the manufacture. By means of the model, the impact of thickness, residual reflectivity and the stimulated cross section of neodymium glass to the ASE are analyzed in detail.

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DOI:10.1117/12.2071248

所属栏目:高功率激光单元与总体技术

基金项目:This paper is supported by NSFC in china (61205212, 11104296)

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作者单位    点击查看

Bingyan Wang:National Laboratory on High Power Laser and Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Science, Shanghai 201800,China
Junyong Zhang:National Laboratory on High Power Laser and Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Science, Shanghai 201800,China
Yanli Zhang:National Laboratory on High Power Laser and Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Science, Shanghai 201800,China
Li wang:National Laboratory on High Power Laser and Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Science, Shanghai 201800,China
Jianqiang Zhu:National Laboratory on High Power Laser and Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Science, Shanghai 201800,China

联系人作者:Jianqiang Zhu(jqzhu@mail.shcnc.ac.cn)

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引用该论文

Bingyan Wang,Junyong Zhang,Yanli Zhang,Li wang,Jianqiang Zhu. Influence of the neodymium glass parameters on the amplified spontaneous emission in slab amplifier[J]. Collection Of theses on high power laser and plasma physics, 2016, 14(1): 9255

Bingyan Wang,Junyong Zhang,Yanli Zhang,Li wang,Jianqiang Zhu. Influence of the neodymium glass parameters on the amplified spontaneous emission in slab amplifier[J]. 高功率激光及等离子体物理研究论文集(专题), 2016, 14(1): 9255

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