Femtosecond mode-locked erbium-doped fiber laser based on MoS2–PVA saturable absorber
Document Type
Article
Publication Date
1-1-2016
Abstract
We fabricate a free-standing few-layer molybdenum disulfide (MoS2)–polymer composite by liquid phase exfoliation of chemically pristine MoS2 crystals and use this to demonstrate a soliton mode-locked Erbium-doped fiber laser (EDFL). A stable self-started mode-locked soliton pulse is generated by fine-tuning the rotation of the polarization controller at a low threshold pump power of 25 mW. Its solitonic behavior is verified by the presence of Kelly sidebands in the output spectrum. The central wavelength, pulse width, and repetition rate of the laser are 1573.7 nm, 630 fs, and 27.1 MHz, respectively. The maximum pulse energy is 0.141 nJ with peak power of 210 W at pump power of 170 mW. This result contributes to the growing body of work studying the nonlinear optical properties of transition metal dichalcogenides that present new opportunities for ultrafast photonic applications.
Keywords
Fiber laser, MoS2, Polymer composite, Mode-locked laser
Divisions
fac_eng,Science
Funders
University of Malaya: PPP Grant Scheme (no. PG098-2014B),MOSTI (no. SF014-2014)
Publication Title
Optics & Laser Technology
Volume
82
Publisher
Elsevier