Optical properties of complex fluoride films obtained using vacuum electron-beam evaporation

Glebov, V.N., Goryachuk, I.O., Dubrova, G.A., Malyutin, A.M., Sokolov, V.I.

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For Russian citation (Opticheskii Zhurnal):

Глебов В.Н., Горячук И.О., Дуброва Г.А., Малютин А.М., Соколов В.И. Оптические свойства плёнок из сложных фторидов, полученных методом электронно-лучевого испарения // Оптический журнал. 2020. Т. 87. № 2. С. 64–68. http://doi.org/10.17586/1023-5086-2020-87-02-64-68

Glebov V.N., Goryachuk I.O., Dubrova G.A., Malyutin A.M., Sokolov V.I. Optical properties of complex fluoride films obtained using vacuum electron-beam evaporation [in Russian] // Opticheskii Zhurnal. 2020. V. 87. № 2. P. 64–68. http://doi.org/10.17586/1023-5086-2020-87-02-64-68

For citation (Journal of Optical Technology):

V. N. Glebov, I. O. Goryachuk, G. A. Dubrova, A. M. Malyutin, and V. I. Sokolov, "Optical properties of complex fluoride films obtained using vacuum electron-beam evaporation," Journal of Optical Technology. 87(2), 117-120 (2020). https://doi.org/10.1364/JOT.87.000117

Abstract:

The ever-growing demands on the functional and operational characteristics of optical thin-film coatings have motivated studies on the properties of films formed using new film-forming materials, including complex fluorides. Interest in such materials is particularly due to the need for coatings with low refractive indices and low optical losses within a wide spectral region. In this paper, we studied the optical properties (refractive indices n and extinction coefficients k) of films formed from complex fluorides, namely, BaY₂F₈, CaY₂F₈, SrY₂F₈, and MgBaF₄, which were obtained by the vacuum electron-beam evaporation method. The properties of these films were compared with the properties of films formed from simple fluorides, namely, BaF₂, CaF₂, SrF₂, YF₃, and MgF₂, which were obtained under the same evaporation conditions.

Keywords:

optical coatings, complex fluorides, electron-beam evaporation, optical properties

Acknowledgements:

This study was supported by the Ministry of Education and Science of the Russian Federation within the framework of the State Assignment of the Federal Research Centre for Crystallography and Photonics of the Russian Academy of Sciences for the creation of fluoride films and through Russian Foundation for Basic Research grant 16-29-05407 for the creation of substrates with a low refractive index to produce optical waveguides based on perfluorinated polymers.

OCIS codes: 160.4760, 310.1860

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