2D layered SiP as anisotropic nonlinear optical material

Two-dimensional (2D) material of silicon phosphide (SiP) has recently been shown as a promising optical material with large band gap, fast photoresponse and strong anisotropy. However, the nonlinear optical properties of 2D SiP have not been investigated yet. Here, the thickness-dependent in-plane a...

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Bibliographic Details
Published in:Scientific reports 2021-03, Vol.11 (1), p.6372-6372, Article 6372
Main Authors: Sar, Huseyin, Gao, Jie, Yang, Xiaodong
Format: Article
Language:English
Subjects:
639/624/400/385
639/925/357/1018
Anisotropy
Graphene
Humanities and Social Sciences
Laboratories
Lasers
multidisciplinary
Optical properties
Optics
Photoresponse
Polarization
Raman spectroscopy
Science
Science (multidisciplinary)
Spectrum analysis
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Summary:Two-dimensional (2D) material of silicon phosphide (SiP) has recently been shown as a promising optical material with large band gap, fast photoresponse and strong anisotropy. However, the nonlinear optical properties of 2D SiP have not been investigated yet. Here, the thickness-dependent in-plane anisotropic third-harmonic generation (THG) from the mechanically exfoliated 2D layered SiP flakes is reported. The crystal orientation of the SiP flake is determined by the angle-resolved polarized Raman spectroscopy. The angular dependence of the THG emission with respect to the incident linear polarization is found to be strongly anisotropic with the two-fold polarization dependence pattern. Furthermore, the effect of the SiP flake thickness on the THG power is analyzed.
ISSN:2045-2322
2045-2322
DOI:10.1038/s41598-021-85938-4