Passively Q-switched and femtosecond modelocked erbium-doped fiber laser based on a 2D palladium disulfide(PdS2) saturable absorber  

作　　者：PING KWONG CHENG CHUN YIN TANG XIN YU WANG LONG-HUI ZENG YUEN HONG TSANG 

机构地区：[1]Department of Applied Physics and Materials Research Center,The Hong Kong Polytechnic University,Hung Horn,Kowloon,Hong Kong,China

出　　处：《Photonics Research》2020年第4期511-518,共8页光子学研究（英文版）

基　　金：Research Grants Council,University Grants Committee of Hong Kong,China(GRF 152109/16E Poly U B-Q52T)。

摘　　要：Stable Q-switched and mode-locked erbium-doped fiber lasers(EDFLs)are first demonstrated by using the novel layered palladium disulfide(PdS2),a new member of group 10 transition metal dichalcogenides(TMDs)-based saturable absorbers(SAs).Self-started Q-switched operation at 1567 nm was achieved with a threshold pump power of 50.6 mW.The modulation ranges of pulse duration and repetition rate were characterized as 12.6-4.5μs and 17.2-26.0 kHz,respectively.Meanwhile,a mode-locked EDFL was also obtained with a pump power threshold of 106.4 mW.The achieved pulse duration is 803 fs,corresponding to a center wavelength of 1565.8 nm and4.48 nm 3 dB bandwidth.To the best of our knowledge,the achieved pulse duration of the mode-locked EDFL in this work is the narrowest compared with all other group 10 TMD SA-based lasers.

关 键 词：Passively Q-switched femtosecond modelocked erbium-doped fiber laser a 2D palladium DISULFIDE 

分 类 号：TN248[电子电信—物理电子学] TQ138.23[化学工程—无机化工]