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连续波500W全固态Nd∶YAG激光器研究
引用本文:胡春华,毕勇,孙志培,李瑞宁,许祖彦,方高瞻,马骁宇.连续波500W全固态Nd∶YAG激光器研究[J].中国激光,2005,32(1):13-15.
作者姓名:胡春华  毕勇  孙志培  李瑞宁  许祖彦  方高瞻  马骁宇
作者单位:中国科学院物理研究所,中国科学院物理研究所,中国科学院物理研究所,中国科学院物理研究所,中国科学院物理研究所,中国科学院半导体研究所,中国科学院半导体研究所 北京100080,北京交通大学理学院物理系,北京100044,北京100080,北京100080,北京100080,北京100080,北京100083,北京100083
基金项目:中国科学院创新工程二期先期启动方向性项目(KGCX2 SWJG 02)资助课题
摘    要:研制了全国产化全固态半导体激光器(LD)抽运模块,Nd∶YAG激光输出功率达500W。介绍了优化抽运模 块结构参数的程度。从增益分布特性等方面,介绍了研究其输入 输出功率特性的实验装置,随着抽运功率的增加, Nd∶YAG激光输出以斜率效率47%线性增加,最大输出功率达到575W,光 光转换效率达26.1%。采用He Ne 激光探测法实验测量了该抽运模块中的热透镜效应。通过测量热焦距,分析了其热透镜效应:热透镜焦距与抽运 功率成反比,抽运功率很小时,热焦距大,热透镜效应很小,被Nd∶YAG棒的修凹面补偿,所以此时热焦距较大,热 效应不显著。随着抽运功率的增大,热焦距减小,热透镜效应越来越显著。

关 键 词:激光技术  半导体激光器抽运  输入输出功率  增益分布  热透镜效应
收稿时间:2003/9/3

Laser-Diode Pumped 500 W Continuous-Wave Nd∶YAG Laser
HU Chun-hua ,BI Yong ,SUN Zhi-pei ,LI Rui-ning ,XU Zu-yan ,FANG Gao-zhan ,MA Xiao-yu Institute of Physics,The Chinese Academy of Sciences,Beijing ,China Institute of Semiconductors,The Chinese Academy of Sciences,Beijing ,China School of Science,Beijing Jiaotong University,Beijing ,China.Laser-Diode Pumped 500 W Continuous-Wave Nd∶YAG Laser[J].Chinese Journal of Lasers,2005,32(1):13-15.
Authors:HU Chun-hua    BI Yong  SUN Zhi-pei  LI Rui-ning  XU Zu-yan  FANG Gao-zhan  MA Xiao-yu Institute of Physics  The Chinese Academy of Sciences  Beijing  China Institute of Semiconductors  The Chinese Academy of Sciences  Beijing  China School of Science  Beijing Jiaotong University  Beijing  China
Affiliation:HU Chun-hua 1,3,BI Yong 1,SUN Zhi-pei 1,LI Rui-ning 1,XU Zu-yan 1,FANG Gao-zhan 2,MA Xiao-yu 2 1Institute of Physics,The Chinese Academy of Sciences,Beijing 100080,China 2Institute of Semiconductors,The Chinese Academy of Sciences,Beijing 100083,China 3School of Science,Beijing Jiaotong University,Beijing 100044,China
Abstract:The output power of homemade all-solid-state laser-diode (LD) pumped Nd∶YAG laser above 500 W has been demonstrated in this paper. Experimental setup and the properties of its input-output power were introduced. From the point of gain distribution, the configuration of the LD-pumped laser was optimized. The maximum output power of the Nd∶YAG laser was about 575 W. The output power was increased linearly with the pump power at the slope efficiency of 47% above the threshold. The optical-to-optical efficiency of 26.1% was obtained. Through He-Ne laser probe method, the thermal lens effects of the LD-pumped laser were measured. The focal length of thermal lens was measured and compared with the theory. When the pump power was increased, the focal length was decreased, and a kind of means to effectively compensate the thermal lens effects was used in the experiment.
Keywords:laser technique  LD-pumped laser  input-output power  gain distribution  thermal lens effects
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