Second-harmonic generation in multilayer hexagonal boron nitride flakes

被引：43

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

页码：5792 / 5795

页数：4

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