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Efficient Broadband Terahertz Radiation Detectors Based on Bolometers with a Thin Metal Absorber

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Abstract

The matrix method has been used to calculate the coefficients of absorption of terahertz radiation in conventional (with radiation incident from vacuum adjacent to the bolometer) and inverted (with radiation incident from the substrate on which the bolometer was fabricated) bolometric structures. Near-unity absorption coefficients were obtained when an additional cavity in the form of a gap between the bolometer and the input or output window was introduced. Conventional bolometers then became narrowband, while inverted-type devices remained broadband.

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Authors and Affiliations

  1. Rzhanov Institute of Semiconductor Physics, Siberian Branch, Russian Academy of Sciences, Novosibirsk, 630090, Russia

    M. A. Dem’yanenko

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  1. M. A. Dem’yanenko
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Correspondence to M. A. Dem’yanenko.

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Original Russian Text © M.A. Dem’yanenko, 2018, published in Zhurnal Tekhnicheskoi Fiziki, 2018, Vol. 88, No. 1, pp. 121–126.

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Dem’yanenko, M.A. Efficient Broadband Terahertz Radiation Detectors Based on Bolometers with a Thin Metal Absorber. Tech. Phys. 63, 120–125 (2018). https://doi.org/10.1134/S1063784218010097

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  • DOI: https://doi.org/10.1134/S1063784218010097

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