Passive mode-locked Er-doped fiber laser pulse generation based on titanium disulfide saturable absorber  

作　　者：Xinxin SHANG Linguang GUO Huanian ZHANG Dengwang LI Qingyang YUE 

机构地区：[1]Shandong Provincial Engineering and Technical Center of Light Manipulations,Shandong Provincial Key Laboratory of Optics and Photonic Device,School of Physics and Electronics,Shandong Normal University,Jinan 250358,China [2]School of Physics and Optoelectronic Engineering,Shandong University of Technology,Zibo 255049,China [3]Shandong Key Laboratory of Medical Physics and Image Processing,School of Physics and Electronics,Shandong Normal University,Jinan 250358,China [4]Shandong Institute of Industrial Technology for Health Sciences and Precision Medicine,School of Physics and Electronics,Shandong Normal University,Jinan 250358,China

出　　处：《Frontiers of Information Technology & Electronic Engineering》2021年第5期756-766,共11页信息与电子工程前沿（英文版）

基　　金：Project supported by the National Natural Science Foundation of China(Nos.11904213 and 11747149);the Shandong Provincial Natural Science Foundation(Nos.ZR2018QF006 and ZR2019MF029);the China Postdoctoral Science Foundation(No.2016M602177);the Opening Foundation of Shandong Provincial Key Laboratory of Laser Technology and Application。

摘　　要：In this study,titanium disulfide(TiS_(2))polyvinyl alcohol(PVA)film-type saturable absorber(SA)is synthesized with a modulation depth of 5.08%and a saturable intensity of 10.62 MW/cm^(2) by liquid-phase exfoliation and spin-coating methods.Since TiS2-based SA has a strong nonlinear saturable absorption property,two types of optical soliton were observed in a mode-locked Er-doped fiber laser.When the pump power was raised to 67.3 mW,a conventional mode-locked pulse train with a repetition rate of 1.716 MHz and a pulse width of 6.57 ps was generated,and the output spectrum centered at 1556.98 nm and 0.466 nm spectral width with obvious Kelly sidebands was obtained.Another type of mode-locked pulse train with the maximum output power of 3.92 mW and pulse energy of 2.28 nJ at the pump power of 517.2 mW was achieved when the polarization controllers were adjusted.Since TiS2-based SA has excellent nonlinear saturable absorption characteristics,broad applications in ultrafast photonic are expected.

关 键 词：Fiber laser Passive mode-locked Saturable absorber Titanium disulfide 

分 类 号：TN244[电子电信—物理电子学]