Ultrashort pulse generation in mode-locked erbium-doped fiber lasers with tungsten disulfide saturable absorber

被引：42

作者：

Liu, Mengli ^{[1
]}

Liu, Wenjun ^{[1
,2
]}

Pang, Lihui ^{[2
]}

Teng, Hao ^{[2
]}

Fang, Shaobo ^{[2
]}

Wei, Zhiyi ^{[2
]}

机构：

[1] Beijing Univ Posts & Telecommun, Sch Sci, State Key Lab Informat Photon & Opt Commun, POB 91, Beijing 100876, Peoples R China

[2] Chinese Acad Sci, Inst Phys, Beijing Natl Lab Condensed Matter Phys, Beijing 100190, Peoples R China

来源：

OPTICS COMMUNICATIONS | 2018年 / 406卷

关键词：

Nonlinear optical materials; Fiber laser; Mode-locked lasers; GRAPHENE PHOTONICS; DARK SOLITONS; MOS2; WS2; ABSORPTION; LOCKING; SB2TE3;

D O I：

10.1016/j.optcom.2017.04.021

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Tungsten disulfide (WS2), as one of typical transition metal dichalcogenides with the characteristics of strong nonlinear polarization and wide bandgap, has been widely used in such fields as biology and optoelectronics. With the magnetron sputtering technique, the saturable absorber (SA) is prepared by depositing WS2 and Au film on the tapered fiber. The heat elimination and damage threshold can be improved for the WS2 SA with evanescent field interaction. Besides, the Au film is deposited on the surface of the WS2 film to improve their reliability and avoid being oxidized. The fabricated SA has a modulation depth of 14.79%. With this SA, we obtain a relatively stable mode-locked fiber laser with the pulse duration of 288 fs, the repetition rate of 41.4 MHz and the signal to noise ratio of 58 dB. (C) 2017 Elsevier B.V. All rights reserved.

引用

页码：72 / 75

页数：4

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