Towards visible-wavelength passively mode-locked lasers in all-fibre format

查看全文 作　　者：Jinhai [1]Zou;Chuchu [1]Dong;Hongjian [1]Wang;Tuanjie [1]Du;Zhengqian [1]Luo

机构地区：[1]Department of Electronic Engineering,Xiamen University,361005 Xiamen,China

出　　处：《Light(Science & Applications)》索引2020年第9卷第1期,共10页

基　　金：supported by the Major Research Plan of the National Natural Science Foundation of China(91750115);Equipment Pre-research Project of Equipment Development Department of Central Military Commission(61404140112);Natural Science Foundation of Fujian Province for Distinguished Young Scientists(2017J06016). 摘　　要：Mode-locked fibre lasers(MLFLs)are fundamental building blocks of many photonic systems used in industrial,scientific and biomedical applications.To date,1–2μm MLFLs have been well developed;however,passively modelocked fibre lasers in the visible region(380–760 nm)have never been reported.Here,we address this challenge by demonstrating an all-fibre visible-wavelength passively mode-locked picosecond laser at 635 nm.The 635 nm mode-locked laser with an all-fibre figure-eight cavity uses a Pr/Yb codoped ZBLAN fibre as the visible gain medium and a nonlinear amplifying loop mirror as the mode-locking element.First,we theoretically predict and analyse the formation and evolution of 635 nm mode-locked pulses in the dissipative soliton resonance(DSR)regime by solving the Ginzburg-Landau equation.Then,we experimentally demonstrate the stable generation of 635 nm DSR mode-locked pulses with a pulse duration as short as~96 ps,a radio-frequency signal-to-noise ratio of 67 dB and a narrow spectral bandwidth of <0.1 nm.The experimental results are in excellent agreement with our numerical simulations.In addition,we also observe 635 nm noise-like pulse operation with a wide(>1 nm)and modulated optical spectrum.This work represents an important step towards miniaturized ultrafast fibre lasers in the visible spectral region. 关键词：PASSIVE FIBRE VISIBLE

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Towards visible-wavelength passively mode-locked lasers in all-fibre format

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