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

• 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
• Language: English
• 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
• DOI: 10.1088/0256-307X/32/8/084205
• ISSN: 0256-307X

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.