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Title: Molybdenum disulfide (MoS2) as a broadband saturable absorber for ultra-fast photonics
Authors: Zhang, H. 
Lu, S.B.
Zheng, J.
Du, J.
Wen, S.C.
Tang, D.Y.
Loh, K.P. 
Issue Date: 2014
Citation: Zhang, H., Lu, S.B., Zheng, J., Du, J., Wen, S.C., Tang, D.Y., Loh, K.P. (2014). Molybdenum disulfide (MoS2) as a broadband saturable absorber for ultra-fast photonics. Optics Express 22 (6) : 7249-7260. ScholarBank@NUS Repository.
Abstract: The nonlinear optical property of few-layered MoS2 nanoplatelets synthesized by the hydrothermal exfoliation method was investigated from the visible to the near-infrared band using lasers. Both open-aperture Z-scan and balanced-detector measurement techniques were used to demonstrate the broadband saturable absorption property of fewlayered MoS2. To explore its potential applications in ultrafast photonics, we fabricated a passive mode locker for ytterbium-doped fibre laser by depositing few-layered MoS2 onto the end facet of optical fiber by means of an optical trapping approach. Our laser experiment shows that few-layer MoS2-based mode locker allows for the generation of stable mode-locked laser pulse, centered at 1054.3 nm, with a 3-dB spectral bandwidth of 2.7 nm and a pulse duration of 800 ps. Our finding suggests that few-layered MoS2 nanoplatelets can be useful nonlinear optical material for laser photonics devices, such as passive laser mode locker, Q-switcher, optical limiter, optical switcher and so on. © 2014 Optical Society of America.
Source Title: Optics Express
ISSN: 10944087
DOI: 10.1364/OE.22.007249
Appears in Collections:Staff Publications

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