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DOI: 10.17586/1023-5086-2023-90-09-114-119
УДК: 681.7.064.452
Numerical simulation of parameters of optical reflectors based on interference and metal coatings for the ultraviolet range of the spectrum
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Publication in Journal of Optical Technology
Губанова Л.А., Зейгман Р.Е. Численное моделирование параметров оптических солнечных отражателей на основе интерференционных и металлических покрытий для ультрафиолетового диапазона спектра // Оптический журнал. 2023. Т. 90. № 9. С. 114–119. http://doi.org/10.17586/1023-5086-2023-90-09-114-119
Gubanova L.A., Zeygman R.E. Numerical simulation of parameters of optical reflectors based on interference and metal coatings for the ultraviolet range of the spectrum [in Russian] // Opticheskii Zhurnal. 2023. V. 90. № 9. P. 114–119. http://doi.org/10.17586/1023-5086-2023-90-09-114-119
The subject of the study. The design of an optical solar reflector, providing high integral reflection of more than 98% in the wavelength range 350–2500 nm and low absorption up to 0,041. The purpose of the work. Creation of optical solar reflectors based on interference coatings in order to solve the problem of heat removal and reflection of solar radiation from aircraft, which will increase their efficiency and duration of use. Method. The choice of an optical solar reflector was carried out on the basis of the synthesis of multilayer structures of interference systems, the selection of film-forming materials resistant to high temperatures, since optical solar reflectors withstand maximum temperatures on the surface of the spacecraft hull of 1260–1454 °C. The spectral characteristics were calculated using the matrix method. The obtained designs of interference mirrors, which include metal layers and layers of refractory oxides of oxides, make it possible to increase the reflection coefficient of radiation in the operating spectral range by choosing the thickness of the layers that make up the dielectric component of the mirror. The main results. The use of a dielectric mirror makes it possible to increase the reflection coefficient of an optical solar reflector, which includes a silver mirror, in the ultraviolet region of the spectrum by 18%. Calculations show that for the developed design of an optical solar reflector, its main characteristic is the solar absorption coefficient, which decreases from 0,049 (for pure silver) to 0,041 for a system that includes layers of silver and from 0,114 (calculated for pure aluminum under the condition of internal reflection) to 0,081 for a system that includes dielectric layers. The practical significance lies in solving the problem of thermoregulation and reflection of solar radiation from spacecraft, which is important for improving their performance and durability.
optical solar reflector, dielectric mirror, metal mirror, reflection in the ultraviolet region
OCIS codes: 310.1620, 310.3915, 310.4165
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