Ultrafast non-resonant third-order optical nonlinearity of GeS2-Ga2S3-CdS chalcogenide glass

被引：14

作者：

Hou, Yanan ^{[1
]}

Liu, Qiming ^{[1
]}

Zhou, Hui ^{[2
]}

Gao, Chang ^{[1
]}

Qian, Shixiong ^{[2
]}

Zhao, Xiujian ^{[1
]}

机构：

[1] Wuhan Univ Technol, Key Lab Silicate Mat Sci & Engn, Minist Educ, Wuhan 430070, Hubei, Peoples R China

[2] Fudan Univ, Dept Phys, Shanghai 200433, Peoples R China

来源：

SOLID STATE COMMUNICATIONS | 2010年 / 150卷 / 17-18期

基金：

中国国家自然科学基金;

关键词：

Chalcogenide glass; Third-order optical nonlinearity; Ultrafast response; Optical Kerr effect;

D O I：

10.1016/j.ssc.2010.02.001

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

Ultrafast third-order nonlinear optical responses of 4(1 - x)/5GeS(2)-(1 - x)/5Ga(2)S(3)-xCdS (x = 0.05, 0.10 and 0.15 in mol%) chalcogenide glasses was investigated by using the femtosecond time-resolved optical Kerr effect technique at a wavelength of 800 nm The largest third-order nonlinear susceptibility of all samples was estimated to be 1 65 x 10(-13) esu. An ultrafast nonlinear response time of about 250 fs was observed, which was dominantly assigned to the ultrafast distortion of the electron cloud under femtosecond laser excitation. A nonlinear relationship between the third-order nonlinear susceptibility and the introduced amount of CdS was discussed, suggesting a possible disturbance between different polarizable bonds in the glass system (C) 2010 Elsevier Ltd. All rights reserved

引用

页码：875 / 878

页数：4

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