Third-order optical nonlinearities of chalcogenide glasses within Ge-Sn-Se ternary system at a mid-infrared window

被引：22

作者：

Qiao, Beijing ^{[1
]}

Dai, Shixun ^{[1
]}

Xu, Yinsheng ^{[1
]}

Zhang, Peiqing ^{[1
]}

Shen, Xiang ^{[1
]}

Xu, Tiefeng ^{[1
]}

Nie, Qiuhua ^{[1
]}

Ji, Wei ^{[2
]}

Chen, Feifei ^{[1
]}

机构：

[1] Ningbo Univ, Res Inst Adv Technol, Lab Infrared Mat & Devices, Ningbo 315211, Zhejiang, Peoples R China

[2] Natl Univ Singapore, Dept Phys, Singapore 117551, Singapore

来源：

OPTICAL MATERIALS EXPRESS | 2015年 / 5卷 / 10期

基金：

中国国家自然科学基金;

关键词：

ABSORPTION; REFRACTION; FIBERS; SOLIDS;

D O I：

10.1364/OME.5.002359

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Experimental results of third-order optical nonlinearities of chalcogenide glasses (ChGs) within Ge-Sn-Se ternary system at a mid-infrared window of 3 and 3.5 mu m are presented in this study. Using femtosecond Z-scan technique, positive nonlinear refractive indexes (n(2)) of the ChGs were obtained at the mid-infrared wavelengths, with no nonlinear absorption observed. The n(2) values at 3 mu m were lower than those at 3.5 mu m because of the presence of hydroxyl (-OH) group. The maximum n(2) was obtained from the Ge-Sn-Se ChGs with highest Sn content, reaching 2.43 x 10(-17) m(2)/W at 3.5 mu m, near two times that of As2Se3 glass. Thus, Ge-Sn-Se ChGs can be regarded as a good candidate for photonic devices that operated at mid-infrared window. (C) 2015 Optical Society of America

引用

页码：2359 / 2365

页数：7

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