Sažetak sa skupa
Parallel optical properties of single crystal and amorphous Ges₂₋ₓSeₓ alloys
P. M. Nikolić
; Belgrade University, P. Box 816
S. S. Vujatović
; Institute IHTM, Beograd
M. Pavlović
; Institute of Physics, Beograd
D. Korolija
; Faculty of Technical Science, Novi Sad
Sažetak
Single crystals of GeS₂₋ₓSeₓ were grown by the vertical Bridgman technique. It was shown that a complete range of solid solutions was formed and that lattice parameter “c” increased, beginning with GeS₂, following Vegard’s law. For both single crystal and amorphous sample, the optical properties were investigated in the range near to the absorption edge and the variation of the energy gap with composition was determined. Beginning with GeS₂ the energy gap decreased when the content of GeS₂ increased, for both single crystal and amorphous alloys.
Infrared transmission spectra of the amorphous samples showed that the samples with more a 50 mol% GeS₂ were very transparent at the wavelength of 10.6 µm. This indicated that these amorphous alloys could be used for making optical fibers in communication systems where CO₂ lasers could be employed as light sources.
Ključne riječi
Hrčak ID:
339013
URI
Datum izdavanja:
20.12.1989.
Posjeta: 146 *