Mid-infrared optical nonlinearities of chalcogenide glasses in Ge-Sb-Se ternary system

被引：52

作者：

Dai, Shixun ^{[1
]}

Chen, Feifei ^{[1
]}

Xu, Yinsheng ^{[1
]}

Xu, Zhe ^{[2
]}

Shen, Xiang ^{[1
]}

Xu, Tiefeng ^{[1
]}

Wang, Rongping ^{[3
]}

Ji, Wei ^{[2
]}

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

[3] Australian Natl Univ, Res Sch Phys & Engn, Laser Phys Ctr, Ctr Ultrahigh Bandwidth Devices Opt Syst CUDOS, Canberra, ACT 0200, Australia

来源：

OPTICS EXPRESS | 2015年 / 23卷 / 02期

基金：

中国国家自然科学基金;

关键词：

3RD-ORDER NONLINEARITY; BAND-GAP; ABSORPTION; 2-PHOTON;

D O I：

10.1364/OE.23.001300

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Optical nonlinearities of chalcogenide glasses in the Ge-Sb-Se ternary system are investigated at mid-infrared wavelengths (2000 and 2500 nm) with femtosecond Z-scan technique. Strong nonlinear refraction in the chalcogenide glasses is observed at 2000 nm, due to three-photon absorption resonance. In addition, the variation in the nonlinear refraction (.) of the Ge-Sb-Se glasses shows two jumpoints as mean co-ordination number (MCN) approaches 2.4 or 2.7, consistent with the theoretical predication. (C) 2015 Optical Society of America

引用

页码：1300 / 1307

页数：8

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