Narrow-band interference filters with absorbing films

Kotlikov, E.N.

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Publication in Journal of Optical Technology

For Russian citation (Opticheskii Zhurnal):

Котликов Е.Н Узкополосные интерференционные фильтры с поглощающими плёнками // Оптический журнал. 2021. Т. 88. № 6. С. 45–47. http://doi.org/10.17586/1023-5086-2021-88-06-45-47

Kotlikov E.N. Narrow-band interference filters with absorbing films [in Russian] // Opticheskii Zhurnal. 2021. V. 88. № 6. P. 45–47. http://doi.org/10.17586/1023-5086-2021-88-06-45-47

For citation (Journal of Optical Technology):

E. N. Kotlikov, "Narrow-band interference filters with absorbing films," Journal of Optical Technology. 88(6), 321-322 (2021). https://doi.org/10.1364/JOT.88.000321

Abstract:

This paper describes narrow-band interference filters based on a Fabry–Pérot interferometer. They are characterized by absorbing metallic films incorporated into the structure of the interference filter. Such a design has virtually the same transmission spectrum in the required region as those with no absorbing films but at the same time suppresses all radiation in the long-wavelength region. An example is given of the synthesis of an interference filter based on Ge, SiO, and Ni films that operates in the mid-IR region for the wavelength of carbon dioxide CO₂ at 4.25 µm.

Keywords:

narrow-band interference filters, spectra, films, infrared region, absorption, transmission

Acknowledgements:

The research was supported by the Ministry of science and higher education of RF, grant No. FSFR-2020-0004.

OCIS codes: 310.1620

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