Dark solitons in WS2 erbium-doped fiber lasers
Tungsten disulfide (WS2) is a type of anisotropic-layered compound and has broadband saturable absorption features as saturable absorbers (SAs). With WS2-based SAs, dark solitons in erbium-doped fiber (EDF) lasers are first obtained. For the generated dark solitons, the center wavelength is measured to be 1530 nm, and the repetition rateis about 116.5 MHz. A series of optical spectra is exhibited. The electrical signal-to-noise ratio is better than 94 dB. Results in this paper demonstrate that WS2-based SAs are the promising SAs for generating dark solitons in EDF lasers.
基金项目：We express our sincere thanks to the editors and referees for their valuable comments. We also express our sincere thanks to Peiguang Yan for providing us the WS2-based SAs. This work has been supported by the National Key Basic Research Programof China (grant nos. 2012CB821304, 2013CB922401, and 2013CB922402), by the National Natural Science Foundation of China (NSFC) (grant nos. 61205064, 61378040, and 11078022), by the National Key Technology R&D Program of the Ministry of Science and Technology under grant no. 2012BAC23B03, and by the Fund of State Key Laboratory of Information Photonics and Optical Communications (Beijing University of Posts and Telecommunications, grant no. 600100161).
Lihui Pang：Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
Hainian Han：Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
Zhongwei Shen：Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
Ming Lei：State Key Laboratory of Information Photonics and Optical Communications, School of Science, P. O. Box 91, Beijing University of Posts and Telecommunications, Beijing 100876, China
Hao Teng：Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
Zhiyi Wei：Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
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Wenjun Liu, Lihui Pang, Hainian Han, Zhongwei Shen, Ming Lei, Hao Teng, and Zhiyi Wei, "Dark solitons in WS2 erbium-doped fiber lasers," Photonics Research 4(3), 0111 (2016)