Study on infrared radiation characteristics of periodic single-screen ring selective radiator

Yuan Lu; Yunsong Feng; LeiLei Chen; Xianyu Shen; Chang Wu; Ya Qiao

doi:10.1117/12.2575730

5 November 2020 Study on infrared radiation characteristics of periodic single-screen ring selective radiator

Yuan Lu, Yunsong Feng, LeiLei Chen, Xianyu Shen, Chang Wu, Ya Qiao

Proceedings Volume 11566, AOPC 2020: Optical Spectroscopy and Imaging; and Biomedical Optics; 1156609 (2020) https://doi.org/10.1117/12.2575730
Event: Applied Optics and Photonics China (AOPC 2020), 2020, Beijing, China

Abstract

The spectral emissivity of the surface of the selective radiation body changes with the change of wavelength. Selective infrared radiator is designed based on frequency selective surface theory. Selective radiators can be achieved using periodic structures, which has the peculiar electromagnetic properties, and has a good regulating effect on the transmission of electromagnetic wave by scientific and reasonable design. Using HFSS software, a frequency selection surface based on periodic single-screen ring was constructed. The ring was made of metallic gold, the dielectric layer was made of silicon dioxide, and the parameters of the basic unit were in the order of micron. The modulation characteristics of electromagnetic wave transmittance of the surface in the infrared band are calculated. It is found that the designed selective radiator has an emissivity of less than 0.1 in the 6.44-10 micrometer band. It is found that with the increase of the interval, the bandwidth of the low transmittance at the long wave becomes narrow. If the inside diameter of the ring is kept unchanged, the outside diameter of the ring is increased. As the width of the ring increases, the resonance frequency of the electromagnetic wave at the long wave decreases and the bandwidth of the low emissivity increases. As the width of the ring decreases, the resonance frequency of electromagnetic wave moves from high frequency to low frequency and the bandwidth of low emissivity decreases. Bandwidth with a transmittance of less than 10% varies from 17.6THz to 16.6 THz. Finally, the application of selective radiator is discussed.

Citation Download Citation

Yuan Lu, Yunsong Feng, LeiLei Chen, Xianyu Shen, Chang Wu, and Ya Qiao "Study on infrared radiation characteristics of periodic single-screen ring selective radiator", Proc. SPIE 11566, AOPC 2020: Optical Spectroscopy and Imaging; and Biomedical Optics, 1156609 (5 November 2020); https://doi.org/10.1117/12.2575730

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