SbS3 enhanced ultrafast third-order optical nonlinearities of Ge-S chalcogenide glasses at 820 nm

被引：10
|
作者：
Chu, Saisai [1 ,2 ]
Li, Fengming [1 ,2 ]
Tao, Haizheng [3 ]
Yang, Hong [1 ,2 ]
Wang, Shufeng [1 ,2 ]
Lin, Changgui [3 ]
Zhao, Xiujian [1 ,2 ]
Gong, Qihuang [1 ,2 ]
机构：
[1] Peking Univ, State Key Lab Mesoscop Phys, Beijing 100871, Peoples R China
[2] Peking Univ, Dept Phys, Beijing 100871, Peoples R China
[3] Wuhan Univ Technol, Minist Educ, Key Lab Silicate Mat Sci & Engn, Wuhan 430070, Peoples R China
来源：
OPTICAL MATERIALS | 2008年 / 31卷 / 02期
基金：
中国国家自然科学基金;
关键词：
Femtosecond; Ultrafast; Nonlinear optics; Third-order; Chalcogenide; SbS3; GeS2; Glass;
D O I：
10.1016/j.optmat.2008.03.002
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
GeS2 based multi-component chalcogenide glasses, Ge-S-Sb(Cd), were prepared in series. With femtosecond time-resolved optical Kerr gate technique, we investigate their ultrafast third-order nonlinear optical (NLO) properties. The strongest NLO response comes from 0.70GeS(2)-0.30Sb(2)S(3). Its chi((3)), 1.8 x 10(-12) esu, is more than three times to GeS2 glass. Their instant NLO responses are within 120 fs pulse duration. We suggest that lone-pair electrons from highly polarizable Sb atom in [SbS3] structure unit play an important role for the enhanced NLO response. This enhancement is much stronger to the contribution from S-S covalent bond. (C) 2008 Elsevier B.V. All rights reserved.
引用
收藏
页码：193 / 195
页数：3
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