Continuous wave and active Q-switched operation of Watt-level LED-pumped two-rod Nd,Ce:YAG laser  

作　　者：沈建平 芦鹏 徐少聪 江容容 陈阳 陈亮 邢凤阳 Jian-Ping Shen;Peng Lu;Shao-Cong Xu;Rong-Rong Jiang;Yang Chen;Liang Chen;Feng-Yang Xing(College of Electronic and Optical Engineering&College of Flexible Electronics,Nanjing University of Posts and Telecommunications,Nanjing 210023,China)

机构地区：[1]College of Electronic and Optical Engineering&College of Flexible Electronics,Nanjing University of Posts and Telecommunications,Nanjing 210023,China

出　　处：《Chinese Physics B》2024年第7期361-366,共6页中国物理B（英文版）

基　　金：Project supported by the Fund from Nanjing University of Posts and Telecommunications,China(Grant Nos.JUH219002 and JUH219007);the Key Research and Development Program of Shandong Province,China(Grant No.2021CXGC010202)。

摘　　要：A high-performance LED-side-pumped two-rod Nd,Ce:YAG laser with continuous-wave(CW) and acousto–optical(A-O) Q-switched operation is demonstrated in this work. A symmetrically shaped flat–flat cavity with two identical LEDside-pumped laser modules is employed for power scalability. In the CW regime, the maximum output average power of laser at 1064 nm is 4.41 W, corresponding to a maximum optical conversion efficiency of 5.3% and a slope efficiency is 12.4%. In the active Q-switched regime, the pulse energy of laser reaches as high as 0.89 m J at a repetition rate of 800 Hz with a pulse width of 457.2 ns, the corresponding highest peak output power is 1.94 k W and the M~2 factor is measured to be about 8.8. To the best of the authors' knowledge, this is the first demonstration and the highest performance of a CW LED-side-pumped two-rod laser Nd,Ce:YAG with Watt-level output reported so far.

关 键 词：Watt-level LED-pumped CW ND Ce:YAG actively Q-switched operation 

分 类 号：TN248[电子电信—物理电子学]