A 658-W VCSEL-pumped rod laser module with52.6% optical efficiency  

作　　者：Xue-Peng Li Jing Yang Meng-Shuo Zhang Tian-Li Yang Xiao-Jun Wang Qin-Jun Peng 李雪鹏;杨晶;张梦硕;杨天利;王小军;彭钦军(Key Laboratory of Solid State Laser,Technical Institute of Physics and Chemistry,Chinese Academy of Sciences,Beijing 100190,China;Key Laboratory of Functional Crystal and Laser Technology,Technical Institute of Physics and Chemistry,Chinese Academy of Sciences,Beijing 100190,China;Institute of Optical Physics and Engineering Technology,Qilu Zhongke,Jinan 250000,China;University of Chinese Academy of Sciences,Beijing 100190,China)

机构地区：[1]Key Laboratory of Solid State Laser,Technical Institute of Physics and Chemistry,Chinese Academy of Sciences,Beijing 100190,China [2]Key Laboratory of Functional Crystal and Laser Technology,Technical Institute of Physics and Chemistry,Chinese Academy of Sciences,Beijing 100190,China [3]Institute of Optical Physics and Engineering Technology,Qilu Zhongke,Jinan 250000,China [4]University of Chinese Academy of Sciences,Beijing 100190,China

出　　处：《Chinese Physics B》2022年第8期149-153,共5页中国物理B（英文版）

摘　　要：A high-efficiency and high-power vertical-cavity surface-emitting laser(VCSEL) side-pumped rod Nd:YAG laser with temperature adaptability are demonstrated. The VCSEL side-pumped laser module is designed and optimized. Five VCSEL arrays are symmetrically located around the laser rod and a large size diffused reflection chamber is designed to ensure a uniform pump distribution. Furthermore, the absorbed pump power distribution of the rod is simulated to verify the uniformity of the pump absorption. Finally, a proof-of-principle experiment is performed in short linear cavity laser with single laser module. A continuous-wave output power of 658 W at 1064 nm is obtained, the corresponding optical-to-optical efficiency is 52.6%, and the power variations are ±0.7% over 400 s and ±3.1% over the temperature range from 16 ℃ to 26 ℃. To the best of our knowledge, this is the highest output power and the highest optical-to-optical efficiency ever reported for VCSEL pumped solid-state lasers. By inserting a telescopic module into the cavity and optimizing the TEM_(00) mode volume, the average beam quality is measured to be M~2= 1.34 under an output power of 102 W. The experimental results reveal that such a high power rod laser module with temperature stability is appropriate for field applications.

关 键 词：rod laser VCSEL-pumped high-efficiency temperature adaptability 

分 类 号：TN248[电子电信—物理电子学]