期刊
OPTICAL ENGINEERING
卷 55, 期 8, 页码 -出版社
SPIE-SOC PHOTO-OPTICAL INSTRUMENTATION ENGINEERS
DOI: 10.1117/1.OE.55.8.081306
关键词
transitional metal dichalcogenides; tungsten diselenide; Q-switching; fiber laser; saturable absorber
类别
资金
- Shanghai Yangfan Program [14YF1401600]
- State Key Lab Project of Shanghai Jiao Tong University [GKZD030033]
- NSFC [51302285, 61178007, 61522510]
- External Cooperation Program of BIC, CAS [181231KYSB20130007]
- National 10000-Talent Program
We report a tungsten diselenide (WSe2) polyvinyl alcohol (PVA)-based, saturable absorber and related experiment results of a Q-switched fiber laser. WSe2-PVA film is synthesized by liquid phase exfoliation method, and its saturable absorption is measured via a nonlinear transmission experiment. The result shows that WSe2-PVA saturable absorber has a modulation depth of 3.5%, which means it has potential for generating an ultrafast pulse laser. We apply this absorber into a ring-cavity erbium-doped fiber laser and obtain Q-switched pulses under appropriate pump power. Our work demonstrates the reliable nonlinear optical characteristics of WSe2 and the feasibility for this two-dimensional material to be applied in the field of nonlinear optics. (C) 2016 Society of Photo-Optical Instrumentation Engineers (SPIE)
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