Ultrafast pulse erbium-doped fiber laser with a graphene/WS2 heterostructure saturable absorber

被引：2

作者：

Du, Wenxiong ^{[1
]}

Li, Heping ^{[1
]}

Liu, Cong ^{[1
]}

Shen, Shengnan ^{[1
]}

Lan, Changyong ^{[1
]}

Li, Chun ^{[1
]}

Liu, Yong ^{[1
]}

机构：

[1] Univ Elect Sci & Technol China, Sch Optoelect Informat, State Key Lab Elect Thin Films & Integrated Devic, Chengdu 610054, Sichuan, Peoples R China

来源：

AOPC 2017: LASER COMPONENTS, SYSTEMS, AND APPLICATIONS | 2017年 / 10457卷

基金：

中国国家自然科学基金;

关键词：

heterostructure; graphene; tungsten disulfide; saturable absorber; mode locking; FEMTOSECOND; NANOTUBE;

D O I：

10.1117/12.2284368

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

We report on ultrafast-pulse generation in an erbium-doped fiber ring laser mode-locked by a graphene/WS2 van der Waals heterostructure saturable absorber. Atomic-layered WS2 is first synthesized on SiO2/Si substrate by the chemical vapor deposition (CVD) method, and then graphene/WS2 heterostructure is fabricated by transferring graphene onto the CVD-grown layered WS2. Taking advantage of excellent saturable absorption properties of the fabricated graphene/WS2 heterostructure, stable soliton pulses are successfully generated in the laser with a 3-dB spectral width of 2.3 nm and a pulse duration of 1.12 ps. Numerical simulations reproduce the mode-locked pulse emission in the experiment. Our research provides a new insight for tailoring versatile two-dimensional heterostructures so as to develop ultrafast photonic applications.

引用

页数：6

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