High-efficiency tandem Ho:YAG single-crystal fiber laser delivering more than 100 W output power  

作　　者：Jianlei Wang Zihao Tong Changsheng Zheng Tianyi Du Yongguang Zhao Chun Wang 

机构地区：[1]Key Laboratory of Laser&Infrared System,Ministry of Education,Shandong University,Qingdao,China [2]Jiangsu Collaborative Innovation Center of Advanced Laser Technology and Emerging Industry,Jiangsu Normal University,Xuzhou,China

出　　处：《High Power Laser Science and Engineering》2024年第4期36-40,共5页高功率激光科学与工程（英文版）

基　　金：supported by the National Natural Science Foundation of China(Nos.62075090 and 52032009)。

摘　　要：We report on a high-efficiency,high-power tandem Ho:YAG single-crystal fiber(SCF)laser in-band pumped by a Tm-doped fiber laser at 1907 nm.In addition to the uniform heat distribution resulting from the large surface-to-volume ratio of this fiber-like thin-crystal rod,the long gain region provided by the tandem layout of two SCFs enables high lasing efficiency and power handling capability.More than 100 W output power is achieved at 2.1μm,corresponding to a slope efficiency of 70.5%and an optical-to-optical efficiency of 67.6%.To the best of our knowledge,this is the highest output power and efficiency ever reported from SCF lasers in the 2-μm spectral range.

关 键 词：high efficiency HO:YAG power handling capability single-crystal fiber 

分 类 号：TN248[电子电信—物理电子学]