CsCl Effected Ultrafast Third-order Optical Nonlinearities of GeS2-Sb2S3 Chalcogenide Glasses

J Mater Sci Technol ›› 2009, Vol. 25 ›› Issue (06): 772-776.

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CsCl Effected Ultrafast Third-order Optical Nonlinearities of GeS₂-Sb₂S₃ Chalcogenide Glasses

Hua Zhang¹⁾, Qiuhua Nie¹⁾, Shixun Dai¹⁾, Xiang Shen¹⁾, XunsiWang²⁾, Xianghua Zhang^1,2)

1) Faculty of Information Science and Engineering, The State Key Laboratory Base of Novel Functional Materials and Preparation Science, Ningbo University, Ningbo 315211, China
2) Université de Rennes I, Rennes 35042, France

Received:2008-07-17 Online:2009-11-28 Published:2009-11-24
Contact: Hua Zhang
Supported by:
the National Basic Research Program of China (\973 Project", (No. 2006CB708607)
the Science and Technology Department of Zhejiang Province, China (No. 2006C11127)
the Science and Technology Foundation of Ningbo, China (No. 2006B100068)
the Natural Science Foundation of Ningbo, China (Nos. 2006A610056, 2007A610004)

Abstract

Abstract:

A series of alkali halide doped chalcohalide glasses (100-x)(0.9GeS₂-0.1Sb₂S₃)-xCsCl (x=5, 10, 15 and 20 mole fraction) were prepared. The absorption spectra and Raman scatting spectra of these glasses were measured. The optical band gaps Eopt were obtained from ultraviolet absorption edges. Z-scan technique was utilized to investigate the third-order nonlinear optical properties of GeS₂-Sb₂S₃-CsCl glasses. The value of Eopt increases and the third-order optical nonlinearity decreases with increasing CsCl content. Decreasing lone-pair electron and broadening the band-gap will provide less transition paths for nonlinear process, which play a key role in ultrafast third-order nonlinear optical responses of these chalcohalide glasses.

Key words: Optical band gap, Microstructural units, Optical nonlinearity, Chalcohalide glasses

Hua Zhang,Qiuhua Nie,Shixun Dai,Xiang Shen,XunsiWang,Xianghua Zhang. CsCl Effected Ultrafast Third-order Optical Nonlinearities of GeS₂-Sb₂S₃ Chalcogenide Glasses[J]. J Mater Sci Technol, 2009, 25(06): 772-776.

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CsCl Effected Ultrafast Third-order Optical Nonlinearities of GeS₂-Sb₂S₃ Chalcogenide Glasses

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