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Proceedings Paper

Modification of refractive index in amorphous As-Se films induced by composition and illumination
Author(s): M. S. Iovu; D. V. Harea; E. P. Colomeico; M. A. Iovu; V. G. Ciorba
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Paper 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 As100-xSex (x=40÷98) and As40Se60:Sny (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).

Paper Details

Date Published: 1 August 2007
PDF: 6 pages
Proc. SPIE 6785, ROMOPTO 2006: Eighth Conference on Optics, 67851E (1 August 2007); doi: 10.1117/12.757942
Show Author Affiliations
M. S. Iovu, Ctr. of Optoelectronics, IAP, ASM (Moldova)
D. V. Harea, Ctr. of Optoelectronics, IAP, ASM (Moldova)
E. P. Colomeico, Ctr. of Optoelectronics, IAP, ASM (Moldova)
M. A. Iovu, Ctr. of Optoelectronics, IAP, ASM (Moldova)
V. G. Ciorba, Ctr. of Optoelectronics, IAP, ASM (Moldova)


Published in SPIE Proceedings Vol. 6785:
ROMOPTO 2006: Eighth Conference on Optics

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