Optical properties of [Hg.sub.1-x-y][Cd.sub.x][Dy.sub.y]Se crystals

Results of investigations of the optical properties of [Hg.sub.1-x-y][Cd.sub.x][Dy.sub.y]Se crystals by the Bridgeman method are presented. Based on independent measurements of the reflection and transmission coefficients with a nicolet 6700 spectrometer at T = 300 K for wavelengths 0.9 ≤ λ ≤ 26.6 µ...

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Bibliographic Details
Published in:Russian physics journal 2013-12, Vol.56 (7), p.831
Main Authors: Kovalyuk, T.T, Maryanchuk, P.D, Maistruk, E.V, Koziarskyi, D.P
Format: Article
Language:English
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Summary:Results of investigations of the optical properties of [Hg.sub.1-x-y][Cd.sub.x][Dy.sub.y]Se crystals by the Bridgeman method are presented. Based on independent measurements of the reflection and transmission coefficients with a nicolet 6700 spectrometer at T = 300 K for wavelengths 0.9 ≤ λ ≤ 26.6 µm, values of the refractive and absorption indices and of the absorption coefficient are determined for the examined crystals. From the dependences α = f(hv) it is established that direct interband optical transitions are allowed in the crystals, and values of the gap width are determined. The effects of the temperature on the transmission coefficient and on the gap width at T = 118-297K are investigated. Keywords: crystal, optical properties, optical coefficients, gap width.
ISSN:1064-8887