Negative thermo-optic coefficients and optical limiting response in pulsed laser deposited Mg-doped ZnO thin films

被引：20

作者：

Agrawal, Arpana ^{[1
,3
]}

Dar, Tanveer A. ^{[2
]}

Andrews, J. T. ^{[2
]}

Sen, Pranay K. ^{[2
]}

Sen, Pratima ^{[1
]}

机构：

[1] Devi Ahilya Univ, Nonlinear Opt Lab, Sch Phys, Takshashila Campus, Indore 452001, Madhya Pradesh, India

[2] Shri GS Inst Technol & Sci, Dept Appl Phys & Optoelect, Indore 452003, Madhya Pradesh, India

[3] Indian Inst Technol, Semicond Opt Mag Lab, Bombay 400076, Maharashtra, India

来源：

JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS | 2016年 / 33卷 / 09期

关键词：

SILICON;

D O I：

10.1364/JOSAB.33.002015

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Thermo-optic properties and optical limiting characteristics are investigated in pulsed laser deposited Mg-doped ZnO thin films by performing a Z-scan experiment in the off-resonant regime using a CW He-Ne laser source. Optical limiting studies in these thin films lead to a conclusion that reverse saturable absorption is the major mechanism for optical limiting properties in these films and nonlinear refraction is caused due to the thermal lensing effect. Negative thermo-optic coefficients were observed, indicating potentiality for athermalization, required to counter the effect of thermal expansion. Sufficiently large thermo-optic coefficients and good optical limiting response suggest the utility of MgZnO films for thermo-optic switches and optical limiting device applications. (C) 2016 Optical Society of America

引用

页码：2015 / 2019

页数：5

共 21 条

[1] Study of nonlinear optical properties of pure and Mg-doped ZnO films [J].