基于YAG/Nd: YAG/Cr4+: YAG 键合晶体
的被动调Q亚纳秒激光器

doi:10.3969/j.issn.1007-5461.2023.04.007

量子电子学报 ›› 2023, Vol. 40 ›› Issue (4): 483-491.doi: 10.3969/j.issn.1007-5461.2023.04.007

基于YAG/Nd: YAG/Cr4+: YAG 键合晶体的被动调Q亚纳秒激光器

唐敬玲 1,2, 齐月 1,2, 白振旭 1,2*, 齐瑶瑶 1,2, 丁洁 1,2, 颜秉政 1,2, 王雨雷 1,2, 吕志伟 1,2

( 1 河北工业大学先进激光技术研究中心, 天津 300401; 2 河北省先进激光技术与装备重点实验室, 天津 300401 )

收稿日期:2021-05-08 修回日期:2021-11-08 出版日期:2023-07-28 发布日期:2023-07-28
通讯作者: zxbai@hebut.edu.cn E-mail:zxbai@hebut.edu.cn
作者简介:唐敬玲 ( 1995 - ) , 女, 山东临沂人, 研究生, 主要从事全固态被动调Q 激光器方面的研究。E-mail: 18865503029@163.com
基金资助:
国家自然科学基金重大科研仪器研制项目(61927815)

Passively Q⁃switched sub⁃nanosecond laser based on YAG/Nd: YAG/Cr4+: YAG composite crystal

TANG Jingling 1,2, QI Yue 1,2, BAI Zhenxu 1,2*, QI Yaoyao 1,2, DING Jie 1,2, YAN Bingzheng 1,2, WANG Yulei 1,2, LYU Zhiwei 1,2

( 1 Center for Advanced Laser Technology, Hebei University of Technology, Tianjin 300401, China; 2 Hebei Key Laboratory of Advanced Laser Technology and Equipment, Tianjin 300401, China )

Received:2021-05-08 Revised:2021-11-08 Published:2023-07-28 Online:2023-07-28
Supported by:
Key Scientific Research Instrument Development Project of National Natural Science Foundation of China

摘要/Abstract

摘要： 全固态被动调Q 激光器有光束质量好、脉冲宽度窄、结构紧凑等特点，在雷达探测、工业制造等领域具有广泛应用前景。对YAG/Nd: YAG/Cr4+: YAG 键合晶体被动调Q 激光器的输出特性进行了理论和实验研究，在泵浦光中心波长为808 nm、光斑直径为230 μm、泵浦功率为6.72 W 的泵浦条件下，获得了平均功率1.41 W、脉宽736 ps，重复频率8.46 kHz 的调Q 激光输出。进一步研究表明，随着泵浦光焦点远离Nd: YAG 端面，激光光斑的对称性下降；且泵浦光焦点离Nd: YAG 端面的距离沿晶体轴向增大时，激光阈值呈上升趋势。

关键词: 激光技术, 全固态, 键合晶体, 被动调Q, Cr4+: YAG

Abstract: Due to its excellent characteristics of good beam quality, narrow pulse width and compact structure, all-solid-state passively Q-switched lasers have a wide application in radar detection, industrial manufacturing etc. Here, the output characteristics of passively Q-switched YAG/Nd: YAG/Cr4+ : YAG laser are studied theoretically and experimentally. While being pumped by 808 nm laser with 230 μm beam diameter and 6.72 W power, a Q-switched laser output with an average power of 1.41 W and pulse width of 736 ps at the repetition rate of 8.46 kHz is obtained. Furthermore, it is shown that the symmetry of the laser beam decreases as the focus of the pump laser moves away from the Nd: YAG end face, and the laser threshold shows an upward trend when the distance between the focus of the pump laser and the Nd: YAG end face increases along the axis of the crystal.

Key words: laser techniques, all-solid-state, composite crystal, passively Q-switched, Cr4+: YAG

中图分类号:

TN248.1

唐敬玲, 齐月, 白振旭, 齐瑶瑶, 丁洁, 颜秉政, 王雨雷, 吕志伟, . 基于YAG/Nd: YAG/Cr4+: YAG 键合晶体的被动调Q亚纳秒激光器[J]. 量子电子学报, 2023, 40(4): 483-491.

TANG Jingling , QI Yue , BAI Zhenxu , QI Yaoyao , DING Jie , YAN Bingzheng , WANG Yulei , LYU Zhiwei , . Passively Q⁃switched sub⁃nanosecond laser based on YAG/Nd: YAG/Cr4+: YAG composite crystal[J]. Chinese Journal of Quantum Electronics, 2023, 40(4): 483-491.

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基于YAG/Nd: YAG/Cr4+: YAG 键合晶体的被动调Q亚纳秒激光器

Passively Q⁃switched sub⁃nanosecond laser based on YAG/Nd: YAG/Cr4+: YAG composite crystal

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基于YAG/Nd: YAG/Cr4+: YAG 键合晶体 的被动调Q亚纳秒激光器

Passively Q⁃switched sub⁃nanosecond laser based on YAG/Nd: YAG/Cr4+: YAG composite crystal

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基于YAG/Nd: YAG/Cr4+: YAG 键合晶体的被动调Q亚纳秒激光器