Second-harmonic generation in multilayer hexagonal boron nitride flakes

被引：40
|
作者：
Kim, Sejeong [1 ]
Froch, Johannes E. [1 ]
Gardner, Augustine [1 ]
Li, Chi [1 ]
Aharonovich, Igor [1 ]
Solntsev, Alexander S. [1 ]
机构：
[1] Univ Technol Sydney, Sch Math & Phys Sci, Ultimo, NSW 2007, Australia
来源：
OPTICS LETTERS | 2019年 / 44卷 / 23期
基金：
澳大利亚研究理事会;
关键词：
GRAPHENE;
D O I：
10.1364/OL.44.005792
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
In this Letter, we report the second-harmonic generation (SHG) from thick hexagonal boron nitride (hBN) flakes with approximately 109-111 layers. The resulting effective second-order susceptibility is similar to previously reported few-layer experiments. This confirms that thick hBN flakes can serve as a platform for nonlinear optics, which is useful because thick flakes are easy to exfoliate while retaining a large size. We also show spatial second-harmonic maps revealing that SHG remains a useful tool for the characterization of the layer structure, even in the case of a large number of layers. (C) 2019 Optical Society of America
引用
收藏
页码：5792 / 5795
页数：4
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