Bulk second-harmonic generation from thermally evaporated indium selenide thin films

被引：6

作者：

Koskinen, Kalle ^{[1
]}

Slablab, Abdallah ^{[1
]}

Divya, Sasi ^{[2
]}

Czaplicki, Robert ^{[1
]}

Chervinskii, Semen ^{[3
,4
]}

Kailasnath, Madanan ^{[2
]}

Radhakrishnan, Padmanabhan ^{[2
]}

Kauranen, Martti ^{[1
]}

机构：

[1] Tampere Univ Technol, Lab Photon, FI-33101 Tampere, Finland

[2] Cochin Univ Sci & Technol, Int Sch Photon, Cochin 682022, Kerala, India

[3] Univ Eastern Finland, Inst Photon, FI-80101 Joensuu, Finland

[4] St Petersburg Polytech Univ, Inst Phys Nanotechnol & Telecommun, St Petersburg 195251, Russia

来源：

OPTICS LETTERS | 2017年 / 42卷 / 06期

基金：

芬兰科学院;

关键词：

OPTICAL-PROPERTIES; SURFACE; NONLINEARITIES; MEDIA; SE;

D O I：

10.1364/OL.42.001076

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We investigate bulk second-order nonlinear optical properties of amorphous indium selenide thin films fabricated by thermal evaporation. Such films are shown to exhibit strong and photostable second-harmonic generation (SHG). We report strong thickness dependence of the second-harmonic signals as characterized by the Maker-fringe method. The absolute value of the nonlinear susceptibility tensor of the film is addressed by analyzing the interference of SHG signals from the film and the glass substrate. The value of the joint non-diagonal component of the susceptibility is found to be 4 pm/V, which is comparable to that of widely used second-order nonlinear materials. (C) 2017 Optical Society of America

引用

页码：1076 / 1079

页数：4

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