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 

作者机构：Department of Applied Physics and Materials Research CenterThe Hong Kong Polytechnic UniversityHung HornKowloonHong KongChina 

出 版 物：《Photonics Research》 (光子学研究（英文版）)

年 卷 期：2020年第8卷第4期

页      面：511-518页

核心收录：

学科分类：081702[工学-化学工艺] 0808[工学-电气工程] 0809[工学-电子科学与技术（可授工学、理学学位）] 08[工学] 0817[工学-化学工程与技术] 0805[工学-材料科学与工程（可授工学、理学学位）] 0803[工学-光学工程] 0702[理学-物理学] 

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

主　　题：Passively Q-switched femtosecond modelocked erbium-doped fiber laser a 2D palladium disulfide 

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.