Q-switched mode-locked multimode fiber laser based on a graphene-deposited multimode microfiber  

作　　者：Jia-Wen Wu Yu-Xin Gao Xu-Bin Lin Jin-Gan Long Hu Cui Zhi-Chao Luo Wen-Cheng Xu Ai-Ping Luo 吴家文;高玉欣;林旭斌;龙金干;崔虎;罗智超;徐文成;罗爱平(Guangdong Provincial Key Laboratory of Nanophotonic Functional Materials and Devices,South China Normal University,Guangzhou 510006,China;Department of Mechanical and Electrical Engineering,Shandong Polytechnic College,Jining 272067,China)

机构地区：[1]Guangdong Provincial Key Laboratory of Nanophotonic Functional Materials and Devices,South China Normal University,Guangzhou 510006,China [2]Department of Mechanical and Electrical Engineering,Shandong Polytechnic College,Jining 272067,China

出　　处：《Chinese Optics Letters》2021年第12期32-38,共7页中国光学快报（英文版）

基　　金：supported by the National Natural Science Foundation of China(Nos.92050101,61875058,11874018,11974006,and 61378036);the Natural Science Foundation of Guangdong Province(No.2021A1515011608)。

摘　　要：We report Q-switched mode-locked(QML)pulses generation in an Yb-doped multimode fiber(MMF)laser by using a graphene-deposited multimode microfiber(GMM)for the first time,to the best of our knowledge.The single-wavelength QML operation with the central wavelength tunable from 1028.81 nm to 1039.20 nm and the dual-wavelength QML operation with the wavelength spacing tunable from 0.93 nm to 5.79 nm are achieved due to the multimode interference filtering effect induced by the few-mode fiber and MMF structure and the GMM in the cavity.Particularly,in the single-wavelength QML operation,the fifth harmonic is also realized owing to the high nonlinear effect of the GMM.The obtained results indicate that the QML pulses can be generated in the MMF laser,and such a flexible tunable laser has promising applications in optical sensing,measuring,and laser processing.

关 键 词：Q-switched mode-locked pulse graphene-deposited multimode microfiber multimode fiber laser 

分 类 号：TN248[电子电信—物理电子学]