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

Dai, Shixun; Chen, Feifei; Xu, Yinsheng; Xu, Zhe; Shen, Xiang; Xu, Tiefeng; Wang, Rongping; Ji, Wei


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 (γ) 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...[Show more]

CollectionsANU Research Publications
Date published: 2015-01-20
Type: Journal article
Source: Optics express
DOI: 10.1364/OE.23.001300


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