Study of Optical Properties of GeS2-Ga2S3-AgCl Glasses

doi:10.3724/SP.J.1077.2010.00191

Abstract

Abstract:

A series of （100-x）(0.85GeS₂-0.15Ga₂S₃)-xAgCl（x=0,5,10,15,20）glasses were prepared by conventional melt-quenching technique. The physical and optical properties, including densities, refractive indices, transition temperatures, crystallization temperatures, absorption spectra and transmission spectra, were determined. The allowed direct transition, indirect transition and Urbach energy of samples were calculated according to the classical Tauc equation. Z-scan technique was carried out to investigate the third-order nonlinear optical properties of the samples. The results show that these GeS₂-Ga₂S₃-AgCl glasses have a wide range of transmission approximately from 0.46μm to 11.5μm, and high refractive indices which are more than 2.2. With the AgCl content increasing, the refractive indices and the third-order nonlinearity increase, molar refraction, while metallization criterion and Urbach energy decrease. The effects of metallization criterion, optical band gap and Urbach energy on refractive indices of glass samples are also discussed.

Key words: chalcohalide glass, optical band gap, refractive index, Urbach energy, thirdorder nonlinearity

CLC Number:

TQ171

O437

FAN Xin-Ye,XU Tie-Feng,SHEN Xiang,DAI Shi-Xun,NIE Qiu-Hua,WANG Xun-Si,CHEN Fei-Fei. Study of Optical Properties of GeS₂-Ga₂S₃-AgCl Glasses
[J]. Journal of Inorganic Materials, DOI: 10.3724/SP.J.1077.2010.00191.

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Study of Optical Properties of GeS₂-Ga₂S₃-AgCl Glasses

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