Modification of refractive index in amorphous As-Se films induced by composition and illumination

M. S. Iovu; D. V. Harea; E. P. Colomeico; M. A. Iovu; V. G. Ciorba

doi:10.1117/12.757942

1 August 2007 Modification of refractive index in amorphous As-Se films induced by composition and illumination

M. S. Iovu, D. V. Harea, E. P. Colomeico, M. A. Iovu, V. G. Ciorba

Proceedings Volume 6785, ROMOPTO 2006: Eighth Conference on Optics; 67851E (2007) https://doi.org/10.1117/12.757942
Event: ROMOPTO 2006: Eighth Conference on Optics, 2006, Sibiu, Romania

Abstract

Photostructural transformations in amorphous films of chalcogenide glasses (ChG) under light irradiation present scientific and practical interests. From scientific point of view, because the composition of ChG determine the kind of structural units and the mean coordination number, in the present work the amorphous films of the chalcogenide systems As_100-xSe_x (x=40÷98) and As₄₀Se₆₀:Sn_y (y=0÷5.0 at.% Sn) were studied. The changes of the refractive index under light irradiation and heat treatment are calculated from the transmission spectra. The more sensitive to light irradiation are the amorphous films of As₆₀Se₄₀ and As₅₀Se₅₀, which exhibit big modifications of the refractive index ((Δn/n)=0.394).

Citation Download Citation

M. S. Iovu, D. V. Harea, E. P. Colomeico, M. A. Iovu, and V. G. Ciorba "Modification of refractive index in amorphous As-Se films induced by composition and illumination", Proc. SPIE 6785, ROMOPTO 2006: Eighth Conference on Optics, 67851E (1 August 2007); https://doi.org/10.1117/12.757942

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