24 October 2017 Ultrafast pulse erbium-doped fiber laser with a graphene/WS2 heterostructure saturable absorber
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Proceedings Volume 10457, AOPC 2017: Laser Components, Systems, and Applications; 104571M (2017) https://doi.org/10.1117/12.2284368
Event: Applied Optics and Photonics China (AOPC2017), 2017, Beijing, China
Abstract
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.
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Wenxiong Du, Heping Li, Cong Liu, Shengnan Shen, Changyong Lan, Chun Li, Yong Liu, "Ultrafast pulse erbium-doped fiber laser with a graphene/WS2 heterostructure saturable absorber", Proc. SPIE 10457, AOPC 2017: Laser Components, Systems, and Applications, 104571M (24 October 2017); doi: 10.1117/12.2284368; https://doi.org/10.1117/12.2284368
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