Dynamic counterpropagating all-normal dispersion(DCANDi)fiber laser  

作　　者：NEERAJ PRAKASH JONATHAN MUSGRAVE BOWEN LI SHU-WEI HUANG 

机构地区：[1]Department of Electrical,Computer,and Energy Engineering,University of Colorado Boulder,Boulder,Colorado 80309,USA [2]Key Laboratory of Optical Fiber Sensing and Communications(Ministry of Education),University of Electronic Science and Technology of China,Chengdu 611731,China

出　　处：《Photonics Research》2024年第9期2033-2046,共14页光子学研究（英文版）

基　　金：National Science Foundation(ECCS 2048202);Office of Naval Research(N00014-19-1-2251).

摘　　要：The fiber single-cavity dual-comb laser(SCDCL)is an emerging light-source architecture that opens up the possibility for low-complexity dual-comb pump-probe measurements.However,the fundamental trade-off between measurement speed and time resolution remains a hurdle for the widespread use of fiber SCDCLs in dual-comb pump-probe measurements.In this paper,we break this fundamental trade-off by devising an all-optical dynamic repetition rate difference(Δf_(rep))modulation technique.We demonstrate the dynamicΔf_(rep) modulation in a modified version of the recently developed counterpropagating all-normal dispersion(CANDi)fiber laser.We verify that our all-optical dynamicΔf_(rep) modulation technique does not introduce excessive relative timing jitter.In addition,the dynamic modulation mechanism is studied and validated both theoretically and experimentally.As a proof-of-principle experiment,we apply this so-called dynamic CANDi(DCANDi)fiber laser to measure the relaxation time of a semiconductor saturable absorber mirror,achieving a measurement speed and duty cycle enhancement factor of 143.DCANDi fiber laser is a promising light source for low-complexity,highspeed,high-sensitivity ultrafast dual-comb pump-probe measurements.

关 键 词：FIBER PUMP laser 

分 类 号：TN248[电子电信—物理电子学]