Efficient and Anisotropic Second Harmonic Generation in Few-layer SnS Film
发布时间：2021-08-01
点击次数：
影响因子：9.926
DOI码：10.1002/adom.202101200
所属单位：Central South Univertity
发表刊物：Advanced Optical Materials
摘要：Group-IV monochalcogenide ferroelectric materials possess fascinating nonlinear optical properties and electro-optical effects which play a vital role in 2D ferroelectrics, multiferroics and nonlinear optoelectronics. However, the studies of nonlinear optical properties of group-IV monochalcogenides are still in their infancy stage. Herein, the preparation of few-layer SnS by the molecular beam epitaxy (MBE) method is reported and the efficient second harmonic generation (SHG) of SnS monochalcogenide is systematically scrutinized by using ultrafast nonlinear optical spectroscopy. The obtained thickness-dependent SHG is highly related with the coherence length. Second-order nonlinear susceptibility of few-layer SnS is also obtained. Polarization-dependent SHG studies reveal its intrinsic anisotropy pattern and can be utilized to identify the crystalline orientation of few-layer SnS film.
合写作者：Mianzeng Zhong, Xiao Guo, Yongsong Wang, Zhihui Chen*, Han Huang, Jun He, Chenliang Su, Kainping Loh
第一作者：Menglong Zhu
论文类型：期刊论文
学科门类：理学
文献类型：J
是否译文：否
发表时间：2021-09-02
收录刊物：SCI
发布期刊链接：https://onlinelibrary.wiley.com/doi/10.1002/adom.202101200