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Optical property measurements of 235 mm large-scale Ti:sapphire crystal

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Abstract

A Ti:sapphire crystal with a diameter of 235 mm and thickness of 72 mm was grown by the heat exchange method (HEM). The absorption intensity of the crystal at 532 nm averaged at 91%. The figures of merit (FOMs) at different positions of the crystal were measured and the FOM value in the central region was found to reach 90. The transmittance laser beam was intact with no obvious distortions and had only a small deformation compared with the incident laser beam. A small-signal amplification experiment was performed on the Ti:sapphire crystal and a gain of more than 6 times was achieved with a pump energy density of 1.98 J/cm2. These tests indicate that the 235 mm Ti:sapphire crystal has excellent optical qualities and will further improve the energy output of a 10 PW laser system.

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DOI:10.3788/col201816.071401

所属栏目:Lasers and laser optics

基金项目:This work was supported by the National Natural Science Foundation of China (Nos. 61775223 and 51502321), the Strategic Priority Research Program of Chinese Academy of Sciences (No. XDB1603), and the Shanghai Scientific Research Project (Nos. 16JC1420600 and 16DZ0503900).

收稿日期:2018-03-22

录用日期:2018-05-08

网络出版日期:2018-06-25

作者单位    点击查看

He Cao:State Key Laboratory of High Field Laser Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, ChinaUniversity of Chinese Academy of Sciences, Chinese Academy of Sciences, Beijing 100049, China
Zebiao Gan:State Key Laboratory of High Field Laser Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China
Xiaoyan Liang:State Key Laboratory of High Field Laser Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China
Lianghong Yu:State Key Laboratory of High Field Laser Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China
Wenqi Li:State Key Laboratory of High Field Laser Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, ChinaUniversity of Chinese Academy of Sciences, Chinese Academy of Sciences, Beijing 100049, China
Zhen Guo:State Key Laboratory of High Field Laser Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, ChinaUniversity of Chinese Academy of Sciences, Chinese Academy of Sciences, Beijing 100049, China
Pei Huang:State Key Laboratory of High Field Laser Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, ChinaUniversity of Chinese Academy of Sciences, Chinese Academy of Sciences, Beijing 100049, China
Jianye Wang:State Key Laboratory of High Field Laser Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, ChinaUniversity of Chinese Academy of Sciences, Chinese Academy of Sciences, Beijing 100049, China
Min Xu:Key Laboratory of Materials for High Power Laser, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China
Yin Hang:Key Laboratory of Materials for High Power Laser, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China

联系人作者:Yin Hang(yhang@siom.ac.cn)

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引用该论文

He Cao, Zebiao Gan, Xiaoyan Liang, Lianghong Yu, Wenqi Li, Zhen Guo, Pei Huang, Jianye Wang, Min Xu, Yin Hang, "Optical property measurements of 235 mm large-scale Ti:sapphire crystal," Chinese Optics Letters 16(7), 071401 (2018)

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