Superior performance of a 2 kHz pulse Nd:YAG laser based on a gradient-doped crystal  

作　　者：MENG’EN WEI TINGQING CHENG RENQIN DOU QINGLI ZHANG HAIHE JIANG 

机构地区：[1]Anhui Province Key Laboratory of Medical Physics and Technology,Center of Medical Physics and Technology,Hefei Institutes of Physical Science,Chinese Academy of Sciences,Hefei 230031,China [2]University of Science and Technology of China,Hefei 230026,China [3]Anhui Institute of Optics and Fine Mechanics,Chinese Academy of Sciences,Hefei 230031,China

出　　处：《Photonics Research》2021年第7期1191-1196,共6页光子学研究（英文版）

基　　金：National Key Research and Development Program of China (2018YFB0407204,2016YFB0701001)。

摘　　要：Herein,we report a homemade new Nd:YAG crystal rod that contains a gradient dopant of 0.39–0.80 at.%Nd3+ from end to end,achieving superior performance of a 2 kHz Nd:YAG pulse laser at 1064 nm. The optical-tooptical conversion efficiency reached 53.8%,and the maximum output power of the laser was 24.2 W,enhanced by 35.9% compared with a uniform crystal rod with the same total concentration of Nd3+. Significantly,our experiments revealed that the gradient concentration crystal produced a relatively even pumping distribution along the rod axis,greatly reducing the temperature gradient as well as having a smaller thermal effect. The pump and thermal distribution smoothing obviously improved the features of laser oscillation and output.

关 键 词：ND:YAG PULSE laser 

分 类 号：TN248[电子电信—物理电子学]