标题：Liquid-Phase Exfoliated Silicon Nanosheets: Saturable Absorber for Solid-State Lasers
作者：Wang, Mengxia; Zhang, Fang; Wang, Zhengping; Xu, Xinguang
作者机构：[Wang, Mengxia; Wang, Zhengping; Xu, Xinguang] Shandong Univ, State Key Lab Crystal Mat, Jinan 250100, Shandong, Peoples R China.; [Zhang, Fang] Sha 更多
通讯作者：Wang, Zhengping;Wang, ZP
通讯作者地址：[Wang, ZP]Shandong Univ, State Key Lab Crystal Mat, Jinan 250100, Shandong, Peoples R China.
关键词：Si nanosheets; 2D material; passively Q-switched; solid-state laser
摘要：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.