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

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

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

Author(s) -

Shixun Dai,

Feifei Chen,

Yinsheng Xu,

Zhe Xu,

Xiang Shen,

Tiefeng Xu,

Rongping Wang,

Wei Ji

Publication year - 2015

Publication title -

optics express

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/oe.23.001300

Subject(s) - chalcogenide , materials science , femtosecond , optics , infrared , chalcogenide glass , ternary operation , refractive index , refraction , optoelectronics , nonlinear optics , absorption (acoustics) , wavelength , laser , physics , computer science , programming language

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 predication.

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