Abstract

A novel multi-wavelength mode-locked Erbium-doped fiber laser with tungsten disulfide (WS₂) combined with a microfiber knot is described. This hybrid fiber structure facilitates strong light matter interaction between the saturated absorption of the WS₂ material and high optical non-linearity of the microfiber knot. It is demonstrated experimentally that the novel fiber laser works stably in the absence of an external comb filter, with the generation of stable multi-wavelength picosecond pulses. In the multi-wavelength lasing regime, up to seven-wavelength stable mode-locked pulses are obtained using a polarization controller with the pump power at ∼250 mW. The pulse period and the pulsewidth are 188.7 ns and 16.3 ps, respectively. In addition, the number of multi-wavelength lasing channels can be changed by simply adjusting the microfiber knot size. Experimental results show the laser to have a stable output over 12-h recording period. The results of this investigation demonstrate that the optical microfiber knot with a WS₂ overlay based fiber laser device can operate as a highly nonlinear optical component and a saturable absorber. The proposed multi-wavelength lasing device can therefore be widely used for non-linear and ultrafast photonics and has a number of advantages compared to similar devices using more conventional technologies, including low cost and good stability.

© 2018 IEEE

Tungsten disulfide saturable absorbers for 67 fs mode-locked erbium-doped fiber lasers

Wenjun Liu, Lihui Pang, Hainian Han, Mengli Liu, Ming Lei, Shaobo Fang, Hao Teng, and Zhiyi Wei
Opt. Express 25(3) 2950-2959 (2017)

All-fiber Er-doped Q-Switched laser based on Tungsten Disulfide saturable absorber

Sahar Hosseinzadeh Kassani, Reza Khazaeinezhad, Hwanseong Jeong, Tavakol Nazari, Dong-Il Yeom, and Kyunghwan Oh
Opt. Mater. Express 5(2) 373-379 (2015)

Ultrafast erbium-doped fiber laser mode-locked by a CVD-grown molybdenum disulfide (MoS₂) saturable absorber

Handing Xia, Heping Li, Changyong Lan, Chun Li, Xiaoxia Zhang, Shangjian Zhang, and Yong Liu
Opt. Express 22(14) 17341-17348 (2014)

Passively Q-switched and femtosecond mode-locked erbium-doped fiber laser based on a 2D palladium disulfide (PdS₂) saturable absorber

Ping Kwong Cheng, Chun Yin Tang, Xin Yu Wang, Long-Hui Zeng, and Yuen Hong Tsang
Photon. Res. 8(4) 511-518 (2020)

High-damage-resistant tungsten disulfide saturable absorber mirror for passively Q-switched fiber laser

Hao Chen, YuShan Chen, Jinde Yin, Xuejun Zhang, Tuan Guo, and Peiguang Yan
Opt. Express 24(15) 16287-16296 (2016)