Properties and optical application of polycrystalline zinc selenide obtained by physical vapor deposition

Findings on production technology, mechanical and optical properties of polycrystalline zinc selenide are presented. The combination of its physicochemical properties provides wide application of ZnSe in IR optics. Production technology is based on the method of physical vapor deposition on a heated...

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Bibliographic Details
Published in:	Nauchno-tekhnicheskiĭ vestnik informat͡s︡ionnykh tekhnologiĭ, mekhaniki i optiki Vol. 15; no. 3; pp. 449 - 456
Main Authors:	Dunaev, A.A., Egorova, I.L.
Format:	Journal Article
Language:	English
Published:	Saint Petersburg National Research University of Information Technologies, Mechanics and Optics (ITMO University) 15-05-2015
Subjects:	application polycrystal properties raw materials technology zinc selenide
Online Access:	Get full text
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Summary:	Findings on production technology, mechanical and optical properties of polycrystalline zinc selenide are presented. The combination of its physicochemical properties provides wide application of ZnSe in IR optics. Production technology is based on the method of physical vapor deposition on a heated substrate (Physical Vapor Deposition - PVD). The structural features and heterogeneity of elemental composition for the growth surfaces of ZnSe polycrystalline blanks were investigated using CAMEBAX X-ray micro-analyzer. Characteristic pyramid-shaped crystallites were recorded for all growth surfaces. The measurements of the ratio for major elements concentrations show their compliance with the stoichiometry of the ZnSe compounds. Birefringence, optical homogeneity, thermal conductivity, mechanical and optical properties were measured. It is established that regardless of polycrystalline condensate columnar and texturing, the optical material is photomechanically isotropic and homogeneous. The actual performance of parts made of polycrystalline optical zinc selenide in the thermal spectral ranges from 3 to 5 μm and from 8 to 14 μm and in the CO2 laser processing plants with a power density of 500 W/cm2 is shown. The developed technology gives the possibility to produce polycrystalline optical material on an industrial scale.
ISSN:	2226-1494 2500-0373
DOI:	10.17586/2226-1494-2015-15-3-449-456