Optical properties of Pb1-xGexTe films

Document Type

Article

Publication Date

2-1-2001

Abstract

Study of Pb1-xGexTe films deposited by PVD revealed that Pb1-xGexTe is a kind of fine characteristic infrared materials, which has a high transmission in the spectral range 3-25 μm, and has indices of refraction in the range 4.8-5.6 at room temperature. Optical properties, which include transmission spectrum, dispersion spectrum and temperature coefficient dn/dT refractive index, depend strongly on content x, environmental temperature and deposition conditions. It can be found that proper change of content x and deposition conditions may result in the change of temperature coefficient dn/dT of refractive index from negative to zero, and to positive from zero, which is of significance for manufacturing highly stable infrared optical filters.

Publication Source (Journal or Book title)

Hongwai Yu Haomibo Xuebao/Journal of Infrared and Millimeter Waves

First Page

69

Last Page

72

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