Experimental Study on a Passively Q-Switched Ho：YLF Laser with Polycrystalline Cr2＋：ZnS as a Saturable Absorber

Output performance of a continuous-wave TIn：YAP laser pumped passively Q-switched Ho：YLF laser is demon- strated with a polycrystalline Cr2＋ ：ZnS as the saturable absorber. We compare the experimental results at the three different distances L of the polycrystalline Cr2＋ ：ZnS saturable absorber to t...

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Published in中国物理快报：英文版 no. 8; pp. 90 - 93
Main Author 崔铮 姚宝权 段小明 李江 白爽 李晓磊 张晔 袁晋鹤 戴通宇 鞠有伦 李超宇 潘裕柏
Format Journal Article
LanguageEnglish
Published 01.08.2015
Subjects
YLF激光器
ZnS
可饱和吸收体
多晶
实验
脉冲持续时间
被动调Q激光器
输出功率
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Summary:Output performance of a continuous-wave TIn：YAP laser pumped passively Q-switched Ho：YLF laser is demon- strated with a polycrystalline Cr2＋ ：ZnS as the saturable absorber. We compare the experimental results at the three different distances L of the polycrystalline Cr2＋ ：ZnS saturable absorber to the output coupler. The pulse width almost remains constant for different L, when the incident pump power is changed in the range of 7.9 27.1 W. The shortest pulse duration of 33.3 ns for L = 105 mm and the highest average output power of 6.8 W for L = 5 mm are obtMned at the incident pump power of 27.1 W. The output wavelength of the passively Q-switched laser shifts to 2045.2nm from 2064.7nm in the cw operation. The beam quality factor of M2 is 1.2.
Bibliography:11-1959/O4
CUI Zheng, YAO Bao-Quan, DUAN Xiao-Ming, LI Jiang, BAI Shuang, LI Xiao-Lei, ZHANG Ye, YUAN Jin-He, DAI Tong-Yu, JU You-Lun, LI Chao-Yu, PAN Yu-Bai（ 1National Key Laboratory of Tunable Laser Technology, Harbin Institute of Technology, Harbin 150001 2Key Laboratory of Transparent and Opto-functional Advanced Inorganic Materials, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050）
Output performance of a continuous-wave TIn：YAP laser pumped passively Q-switched Ho：YLF laser is demon- strated with a polycrystalline Cr2＋ ：ZnS as the saturable absorber. We compare the experimental results at the three different distances L of the polycrystalline Cr2＋ ：ZnS saturable absorber to the output coupler. The pulse width almost remains constant for different L, when the incident pump power is changed in the range of 7.9 27.1 W. The shortest pulse duration of 33.3 ns for L = 105 mm and the highest average output power of 6.8 W for L = 5 mm are obtMned at the incident pump power of 27.1 W. The output wavelength of the passively Q-switched laser shifts to 2045.2nm from 2064.7nm in the cw operation. The beam quality factor of M2 is 1.2.
ISSN:0256-307X
1741-3540
DOI:10.1088/0256-307X/32/8/084205