Cladding-pumped Raman fiber laser with 0.78%quantum defect enabled by phosphorus-doped fiber  

作　　者：Xiaoya Ma Jiangming Xu Jun Ye Yang Zhang Liangjin Huang Tianfu Yao Jinyong Leng Zhiyong Pan Pu Zhou 

机构地区：[1]College of Advanced Interdisciplinary Studies,National University of Defense Technology,Changsha 410073 China

出　　处：《High Power Laser Science and Engineering》2022年第2期1-6,共6页高功率激光科学与工程（英文版）

基　　金：the National Natural Science Foundation of China(NSFC)(No.61905284);the National Postdoctoral Program for Innovative Talents(No.BX20190063);the Innovation Group of Hunan Province,China(No.2019JJ10005)。

摘　　要：The quantum defect(QD)is an important issue that demands prompt attention in high-power fiber lasers.A large QD may aggravate the thermal load in the laser,which would impact the frequency,amplitude noise and mode stability,and threaten the security of the high-power laser system.Here,we propose and demonstrate a cladding-pumped Raman fiber laser(RFL)with QD of less than 1%.Using the Raman gain of the boson peak in a phosphorus-doped fiber to enable the cladding pump,the QD is reduced to as low as 0.78%with a 23.7 W output power.To our knowledge,this is the lowest QD ever reported in a cladding-pumped RFL.Furthermore,the output power can be scaled to 47.7 W with a QD of 1.29%.This work not only offers a preliminary platform for the realization of high-power low-QD fiber lasers,but also proves the great potential of low-QD fiber lasers in power scaling.

关 键 词：cladding pumping lowquantum defect phosphorus-doped fiber Ramanfiber laser 

分 类 号：TN248[电子电信—物理电子学]