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7
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vol 63 / July, 2020
Article

DOI 10.17586/0021-3454-2019-62-8-734-740

UDC 681.7.064.454

CALCULATION OF THE STRUCTURE OF INTERFERENCE COATINGS RESISTANT TO LAYERS PARAMETERS DEVIATION

P. T. Ngo
ITMO University, Department of Optical Information Technologies and Materials; Post-Graduate Student


L. A. Gubanova
ITMO University, 197101, Saint-Petersburg, Russian federation; Professor


F. V. Khoa
ITMO University, Department of Optical Information Technologies and Materials; Post-Graduate Student


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Abstract. The quality function is proposed to use as a target function in calculation of interference coating pa-rameters. An algorithm is presented which determines the design of interference coating to provide a specified energy reflectance or transmittance in a certain wavelength range, with the additional condition of insensitiveness or low sensitiveness of the spectral characteristics to deviations in the layers’ parameters. The proposed algorithm efficiency is confirmed by analysis of obtained coating design.
Keywords: synthesis of interference coating, optical thickness deviation, objective function, stability, algorithm, beam splitter

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