Direct generation of dip-type sidebands from WS2 mode-locked fiber laser

被引:68
作者
Guo, Bo [1 ]
Lyu, Quan [2 ]
Yao, Yong [2 ]
Wang, Pengfei [1 ,3 ]
机构
[1] Harbin Engn Univ, Key Lab Infiber Integrated Opt, Minist Educ, Harbin 150001, Peoples R China
[2] Harbin Inst Technol, Shenzhen Grad Sch, Sch Elect & Informat Engn, Shenzhen 518055, Peoples R China
[3] Dublin Inst Technol, Photon Res Ctr, Kevin St, Dublin 8, Ireland
来源
OPTICAL MATERIALS EXPRESS | 2016年 / 6卷 / 08期
基金
中国博士后科学基金; 中国国家自然科学基金;
关键词
MOLYBDENUM-DISULFIDE MOS2; SATURABLE-ABSORBER; GRAPHENE; INSTABILITY; ABSORPTION; SOLITON; LOCKING;
D O I
10.1364/OME.6.002475
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
In this paper, we demonstrated the direct generation of dip-type sidebands from a passively mode-locked fiber laser based on the evanescent field interaction of two-dimensional material WS2 and microfiber. The WS2 nanosheets in polyvinyl alcohol solution are prepared through the liquid-phase exfoliation method and transferred onto a tapered fiber by the optical deposition method. The WS2-deposited microfiber device could both operate as a mode-locker for soliton generation and induce a strong polarization effect to constitute an artificial polarizer for dip-type sidebands formation. In experiment, six kinds of dip-sidebands, namely, dip-dip type, hybrid peak-dip and dip type (I, II), dual-peak-dip type (I, II), and nearly-flat-top type are achieved by properly adjusting the pump strength and the polarization state in the laser cavity. Study found that the dynamic evolution of the dip-type sidebands along with the pump power is not reversible. In addition, we also obtained the maximum depth of similar to 16.8 dB and similar to 22 dB for dual-peak-dip type. and dual-peak-dip type II, respectively, and their second-order forms. Our study shows clearly that WS2-assisted microfiber device can be as a mode-locker for soliton generation and a polarizer for studying nonlinear optics phenomenon in the fiber lasers simultaneously. (C) 2016 Optical Society of America
引用
收藏
页码:2475 / 2486
页数:12
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