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Compact quasi continuous pumped Nd: YAG Q-switched solid laser

LIU Yu-qian ZHANG He JIN Liang XU Ying-tian WANG Hai-zhu ZOU Yong-gang MA Xiao-hui LI Yan

刘宇乾, 张贺, 金亮, 徐英添, 王海珠, 邹永刚, 马晓辉, 李岩. 紧凑型准连续泵浦调Q Nd:YAG激光器[J]. 中国光学(中英文), 2019, 12(2): 413-424. doi: 10.3788/CO.20191202.0413
引用本文: 刘宇乾, 张贺, 金亮, 徐英添, 王海珠, 邹永刚, 马晓辉, 李岩. 紧凑型准连续泵浦调Q Nd:YAG激光器[J]. 中国光学(中英文), 2019, 12(2): 413-424. doi: 10.3788/CO.20191202.0413
LIU Yu-qian, ZHANG He, JIN Liang, XU Ying-tian, WANG Hai-zhu, ZOU Yong-gang, MA Xiao-hui, LI Yan. Compact quasi continuous pumped Nd: YAG Q-switched solid laser[J]. Chinese Optics, 2019, 12(2): 413-424. doi: 10.3788/CO.20191202.0413
Citation: LIU Yu-qian, ZHANG He, JIN Liang, XU Ying-tian, WANG Hai-zhu, ZOU Yong-gang, MA Xiao-hui, LI Yan. Compact quasi continuous pumped Nd: YAG Q-switched solid laser[J]. Chinese Optics, 2019, 12(2): 413-424. doi: 10.3788/CO.20191202.0413

紧凑型准连续泵浦调Q Nd:YAG激光器

基金项目: 

国家自然基金青年基金 21707010

吉林省科技发展计划项目 20180519018JH

吉林省科技发展计划重点项目 20150204068GX

详细信息
    作者简介:

    刘宇乾(1993-), 男, 吉林延吉人, 硕士研究生, 2016年于长春理工大学获得学士学位, 主要从事固体激光器方面的研究。E-mail:liuyuqian9@163.com

    李岩(1982-), 男, 吉林长春人, 博士, 助理研究员, 2006年于长春理工大学获得硕士学位, 2016年于北京理工大学获得博士学位, 现为长春理工大学高功率半导体激光国家重点实验室助理研究员, 主要从事高功率固体激光器设计与应用方面的研究。E-mail:liyan8281@cust.edu.cn

  • 中图分类号: TN248.1

Compact quasi continuous pumped Nd: YAG Q-switched solid laser

doi: 10.3788/CO.20191202.0413
Funds: 

National Science Foundation for Young Scientists of China 21707010

Jilin Science and Technology Development Plan 20180519018JH

Jilin Science and Technology Development Plan 20150204068GX

More Information
    Author Bio:

    LIU Yuqian (1993—), male, Yanji, Jilin, Master's Degree, received a Bachelor′s Degree from Changchun University of Science and Technology in 2016. He is mainly engaged in solid state laser research. E-mail:liuyuqian9@163.com

    LI Yan(1982—), male, Changchun, Jilin, Ph.D., Assistant Researcher, obtained a Master′s Degree from Changchun University of Science and Technology in 2006 and a Ph.D. from Beijing Institute of Technology in 2016. He is currently a Laboratory Assistant Researcher for a national key experiment in high power semiconductor lasers at Changchun University of Science and Technology. He is mainly engaged in high power solid state laser design and applications research. E-mail:liyan8281@cust.edu.cn

    Corresponding author: LI Yan, E-mail:liyan8281@cust.edu.cn
  • 摘要: 本文设计了一种紧凑型端面泵浦电光调Q Nd:YAG激光器。为实现激光器整体结构紧凑,以快轴准直后的半导体激光器叠阵(Laser Diode Arrays,LDAs)作为泵浦源。使用焦距分别为40 mm和25 mm的球面镜和柱面镜将泵浦光耦合至Nd:YAG晶体内。利用Tracepro软件模拟了晶体入射端面和出射端面的光场分布。在采用Ф 6 mm×30 mm、掺杂浓度1.0at.% Nd:YAG晶体作为增益介质时,入射与出射泵浦光斑分别为5 mm(慢轴)×4.5 mm(快轴)和3 mm(慢轴)×6 mm(快轴),吸收效率为83%。利用Ansys软件模拟了在22℃和60℃条件下Nd:YAG激光器壳体在360 s内的温度场动态分布。实验结果表明,本文设计的紧凑型激光器可以实现稳定的脉冲激光输出。在重复频率分别为30 Hz和50 Hz条件下,获得了单脉冲能量为30 mJ和25 mJ的单脉冲输出,对应脉冲宽度分别为18 ns和16 ns,斜效率分别为11.6%和14.71%。实验结果表明,本文设计的紧凑型激光器可以实现稳定的脉冲激光输出。

     

  • 图 1  实验装置示意图

    Figure 1.  Schematic of the experimental setup

    图 2  Nd:YAG晶体端面泵浦光归一化强度分布

    Figure 2.  Normalized distribution of the pump source at Nd:YAG end surface

    图 3  Nd:YAG壳体动态热学模拟计算

    Figure 3.  Dynamic thermal simulation of Nd:YAG shell

    图 4  直接泵浦晶体的输出特性

    Figure 4.  Output characteristics of directly pumped crystals

    图 5  Nd:YAG激光器调Q时输出结果

    Figure 5.  Output results of Nd:YAG laser with an electro Q-switch

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出版历程
  • 收稿日期:  2018-04-27
  • 修回日期:  2018-05-29
  • 刊出日期:  2019-04-01

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