4.6 Article

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

期刊

MATERIALS
卷 12, 期 2, 页码 -

出版社

MDPI
DOI: 10.3390/ma12020201

关键词

Si nanosheets; 2D material; passively Q-switched; solid-state laser

资金

  1. Natural Science Foundation of Shandong Province [ZR2017MF031]
  2. National Natural Science Foundation of China [11704227]
  3. Scientific Research Foundation of Shandong University of Technology [4041/416033]

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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 mu m, 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.

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