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Title: Optical and mechanical characteristics of mixed composition zinc telluride-magnesium fluoride optical thin films for use in the near infrared region
Authors: Basu, A
Verma, B S
Bhattacharyya, T K
Kar, M
Bhattacharyya, R
Issue Date: Jul-1999
Publisher: NISCAIR-CSIR, India
Abstract: Mixed composition optical thin films of zinc telluride-magnesium fluoride, which have not been studied so far, have been investigated. These films have been evaporated by thermal evaporation from mixtures of the constituents in different proportions by weight, from a single source. The films have been characterised for their optical properties (refractive index, extinction coefficient and IR transmittance), mechanical properties (intrinsic stress and surface morphology) and crystalline/amorphous structure. It has been found that these mixed composition films have tailorable refractive indices and low intrinsic stress for a certain range of compositions. Good IR transmittance and smooth surface morphology are the general features of these films. This makes them useful for incorporation in multilayer thin film optical coatings in the near infrared region.
Page(s): 561-565
ISSN: 0975-1041 (Online); 0019-5596 (Print)
Appears in Collections:IJPAP Vol.37(07) [July 1999]

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