Spatiotemporal mode-locked multimode fiber laser with dissipative four-wave mixing effect  

作　　者：Ming-Wei Qiu Chao-Qun Cai Zu-Xing Zhang 邱明伟;蔡超群;张祖兴(Advanced Photonic Technology Laboratory,College of Electronic and Optical Engineering&College of Microelectronics,Nanjing University of Posts and Telecommunications,Nanjing 210023,China)

机构地区：[1]Advanced Photonic Technology Laboratory,College of Electronic and Optical Engineering&College of Microelectronics,Nanjing University of Posts and Telecommunications,Nanjing 210023,China

出　　处：《Chinese Physics B》2022年第10期165-170,共6页中国物理B（英文版）

基　　金：Project partially supported by the National Natural Science Foundation of China (Grant Nos. 91950105 and 62175116);the 1311 Talent Plan of Nanjing University of Posts and Telecommunications。

摘　　要：The high degree of freedom and novel nonlinear phenomena of multimode fiber are attracting attention. In this work,we demonstrate a spatiotemporal mode-locked multimode fiber laser, which relies on microfiber knot resonance(MKR) via dissipative four-wave-mixing(DFMW) to achieve high-repetition-rate pulses. Apart from that, DFMW mode locking with switchable central wavelengths can also be obtained. It was further found that high pulse energy induced nonlinear effect of the dominant mode-locking mechanism transforming from DFMW to nonlinear Kerr beam cleaning effect(NL-KBC). The experimental results are valuable for further comprehending the dynamic characteristics of spatiotemporal mode-locked multimode fiber lasers, facilitating them much more accessible for applications.

关 键 词：microfiber knot resonance(MKR) dissipative four-wave-mixing(DFMW) nonlinear Kerr beam cleaning effect(NL-KBC) multimode fiber laser 

分 类 号：TN248[电子电信—物理电子学]