Spectroscopic and radiation-resistant properties of Er,Pr：GYSGG laser crystal operated at 2.79 μm

We demonstrate the spectroscopic and laser performance before and after 100 Mrad gamma-ray irradiation on an Er,Pr：GYSGG crystal grown by the Czochralski method. The additional absorption of Er,Pr：GYSGG crystal is close to zero in the 968 nm pumping and 2.7-3 μm laser wavelength regions. The lifetim...

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Published inChinese physics B Vol. 26; no. 7; pp. 173 - 177
Main Author 赵绪尧 孙敦陆 罗建乔 张会丽 方忠庆 权聪 李秀丽 程毛杰 张庆礼 殷绍唐
Format Journal Article
LanguageEnglish
Published 01.06.2017
Subjects
γ射线照射
光谱
提拉法生长
操作
最大输出功率
激光晶体
空间辐射环境
辐射性能
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Summary:We demonstrate the spectroscopic and laser performance before and after 100 Mrad gamma-ray irradiation on an Er,Pr：GYSGG crystal grown by the Czochralski method. The additional absorption of Er,Pr：GYSGG crystal is close to zero in the 968 nm pumping and 2.7-3 μm laser wavelength regions. The lifetimes of the upper and lower levels show faint decreases after gamma-ray irradiation. The maximum output powers of 542 and 526 mW with the slope efficiencies of 17.7% and 17.0% are obtained, respectively, on the GYSGG/Er,Pr：GYSGG composite crystal before and after the gammaray irradiation. These results suggest that Er,Pr：GYSGG crystal as a laser gain medium possesses a distinguished antiradiation ability for application in space and radiant environments.
Bibliography:We demonstrate the spectroscopic and laser performance before and after 100 Mrad gamma-ray irradiation on an Er,Pr：GYSGG crystal grown by the Czochralski method. The additional absorption of Er,Pr：GYSGG crystal is close to zero in the 968 nm pumping and 2.7-3 μm laser wavelength regions. The lifetimes of the upper and lower levels show faint decreases after gamma-ray irradiation. The maximum output powers of 542 and 526 mW with the slope efficiencies of 17.7% and 17.0% are obtained, respectively, on the GYSGG/Er,Pr：GYSGG composite crystal before and after the gammaray irradiation. These results suggest that Er,Pr：GYSGG crystal as a laser gain medium possesses a distinguished antiradiation ability for application in space and radiant environments.
Er; Pr：GYSGG crystal; gamma-ray irradiation; anti-radiation ability; laser material
Xu-Yao Zhao1,2,Dun-Lu Sun1,Jian-Qiao Luo1,3,Hui-Li Zhang1,2,Zhong-Qing Fang1,2,Cong Quan1,2,Xiu-Li Li1,Mao-Jie Cheng1,Qing-Li Zhang1,Shao-Tang Yin1 （1 The Key Laboratory of Photonic Devices and Materials, Anhui Province, Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei 230031, China ; 2 University of Science and Technology of China, Hefei 230022, China ;3 State Key Laboratory of Pulsed Power Laser Technology, Electronic Engineering Institute, Hefei 230037, China）
11-5639/O4
ISSN:1674-1056
2058-3834
DOI:10.1088/1674-1056/26/7/074217