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Materials 2019, 12(2), 201; https://doi.org/10.3390/ma12020201

Liquid-Phase Exfoliated Silicon Nanosheets: Saturable Absorber for Solid-State Lasers

1
State Key Lab of Crystal Materials, Shandong University, Jinan 250100, China
2
School of Physics and Optoelectronic Engineering, Shandong University of Technology, Zibo 255000, China
*
Author to whom correspondence should be addressed.
Received: 10 December 2018 / Revised: 1 January 2019 / Accepted: 4 January 2019 / Published: 9 January 2019
(This article belongs to the Section Optics and Photonics)
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Abstract

As a newly-developed two-dimensional (2D) material of group-IVA, few-layer silicon (Si) nanosheets were prepared by the liquid phase exfoliation (LPE) method. Its non-linear saturable adsorption property was investigated by 532 and 1064 nm nanosecond lasers. Using Si nanosheets as the saturable absorber (SA), passive Q-switched all-solid-state lasers were demonstrated for the first time. For different laser emissions of Nd3+ at 0.9, 1.06, and 1.34 µm, the narrowest Q-switched pulse widths were 200.2, 103.7, and 110.4 ns, corresponding to the highest peak powers of 2.76, 2.15, and 1.26 W. The results provide a promising SA for solid-state pulsed lasers and broaden the potential application range of Si nanosheets in ultrafast photonics and optoelectronics. View Full-Text
Keywords: Si nanosheets; 2D material; passively Q-switched; solid-state laser Si nanosheets; 2D material; passively Q-switched; solid-state laser
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Wang, M.; Zhang, F.; Wang, Z.; Xu, X. Liquid-Phase Exfoliated Silicon Nanosheets: Saturable Absorber for Solid-State Lasers. Materials 2019, 12, 201.

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