A 46-W Laser Diode Stack End-Pumped Slab Amplifier with a Pulse Duration of Picoseconds  

作　　者：YAN Ying FAN Zhong-Wei NIU Gang YU Jin ZHANG Heng-Li 闫莹;樊仲维;牛岗;余锦;张恒利(Academy of Opto-electronics,Chinese Academy of Sciences,Beijing 100094;Beijing GK Laser Technology Co.,Ltd.,Beijing 100092;School of Optoelectronics,Beijing Institute of Technology,Beijing 100081)

机构地区：[1]Academy of Opto-electronics,Chinese Academy of Sciences,Beijing 100094 [2]Beijing GK Laser Technology Co.,Ltd.,Beijing 100092 [3]School of Optoelectronics,Beijing Institute of Technology,Beijing 100081

出　　处：《Chinese Physics Letters》2012年第3期98-100,共3页中国物理快报（英文版）

基　　金：Supported by the National High-Technology Research and Development Program of China under Grant No 2011AA030205;the International Cooperation Program of China under Grant No 2010DFR50650.

摘　　要：A 46-W laser diode end-pumped amplifier is demonstrated by using a SESAM passively mode-locked oscillator and a compact LD stack end-pumped slab amplifier.For the oscillator,a 5-W picosecond mode-locked laser with a repetition frequency of 79MHz is obtained with beam quality factors of M^(2)<1.3.A beam shaping system made up of cylindrical lens is designed according to different sizes of the active medium in both directions,and a plane-plane cavity is used in the amplifier for high efficiency.At the absorbed pumping power of 174 W,the highest output power of 46 W is obtained with the slope efficiency of 29.5%.The beam quality factors M2 in both directions are measured to be 1.43 and 1.76,respectively.

关 键 词：AMPLIFIER PUMPED PUMPING 

分 类 号：TN2[电子电信—物理电子学]