Systematic z-scan measurements of the third order nonlinearity of chalcogenide glasses

Ting Wang; Xin Gai; Wenhou Wei; Rongping Wang; Zhiyong Yang; Xiang Shen; Steve Madden; Barry Luther-Davies

doi:10.1364/OME.4.001011

Systematic z-scan measurements of the third order nonlinearity of chalcogenide glasses

Ting Wang, Xin Gai^*, Wenhou Wei, Rongping Wang, Zhiyong Yang, Xiang Shen, Steve Madden, Barry Luther-Davies

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

172 Citations (Scopus)

Abstract

We report measurements of the third order optical nonlinearity of 51 chalcogenide glasses in the near infrared. Substituting more polarizable elements (Se for S, Sb for As) into the glasses increased their nonlinearity but also reduced the optical bandgap increasing two-photon absorption. Overall the measured values are an extremely good fit to the semi-empirical Miller's rule whilst the normalized real and imaginary parts are in satisfactory agreement with the scaling for indirect gap semiconductors reported by Dinu. At 1550nm we find that there is an upper limit to the nonlinearity of ≈ 10^-13 cm²/W above which two-photon absorption becomes significant.

Original language	English
Pages (from-to)	1011-1022
Number of pages	12
Journal	Optical Materials Express
Volume	4
Issue number	5
DOIs	https://doi.org/10.1364/OME.4.001011
Publication status	Published - May 2014

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abstract = "We report measurements of the third order optical nonlinearity of 51 chalcogenide glasses in the near infrared. Substituting more polarizable elements (Se for S, Sb for As) into the glasses increased their nonlinearity but also reduced the optical bandgap increasing two-photon absorption. Overall the measured values are an extremely good fit to the semi-empirical Miller's rule whilst the normalized real and imaginary parts are in satisfactory agreement with the scaling for indirect gap semiconductors reported by Dinu. At 1550nm we find that there is an upper limit to the nonlinearity of ≈ 10-13 cm2/W above which two-photon absorption becomes significant.",

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AU - Wang, Ting

AU - Gai, Xin

AU - Wei, Wenhou

AU - Wang, Rongping

AU - Yang, Zhiyong

AU - Shen, Xiang

AU - Madden, Steve

AU - Luther-Davies, Barry

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AB - We report measurements of the third order optical nonlinearity of 51 chalcogenide glasses in the near infrared. Substituting more polarizable elements (Se for S, Sb for As) into the glasses increased their nonlinearity but also reduced the optical bandgap increasing two-photon absorption. Overall the measured values are an extremely good fit to the semi-empirical Miller's rule whilst the normalized real and imaginary parts are in satisfactory agreement with the scaling for indirect gap semiconductors reported by Dinu. At 1550nm we find that there is an upper limit to the nonlinearity of ≈ 10-13 cm2/W above which two-photon absorption becomes significant.

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Systematic z-scan measurements of the third order nonlinearity of chalcogenide glasses

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