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Superconducting hot-electron bolometer mixer as element of thermal imager matrix

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Abstract

The possibility of using a matrix of sensitive elements on a 12-mm-diameter hyperhemispherical lens in a thermal imager operating in the terahertz range has been studied. Dimensions of a lens region acceptable for arrangement of the matrix, in which the receiver noise temperature varies within 16% of the mean value, are determined to be 3.3% of the lens diameter. Deviations of the main lobe of the directivity pattern are evaluated, which amount to ±1.25° relative to the direction toward the optimum position of a mixer. The fluctuation sensitivity of the receiver measured in experiment is 0.5 K at a frequency of 300 GHz.

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Authors and Affiliations

  1. Moscow State Pedagogical University, Moscow, Russia

    R. V. Ozhegov, K. N. Gorshkov, O. V. Okunev & G. N. Gol’tsman

Authors
  1. R. V. Ozhegov
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  2. K. N. Gorshkov
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  3. O. V. Okunev
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  4. G. N. Gol’tsman
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Corresponding author

Correspondence to R. V. Ozhegov.

Additional information

Original Russian Text © R.V. Ozhegov, K.N. Gorshkov, O.V. Okunev, G.N. Gol’tsman, 2010, published in Pis’ma v Zhurnal Tekhnicheskoĭ Fiziki, 2010, Vol. 36, No. 21, pp. 70–77.

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Ozhegov, R.V., Gorshkov, K.N., Okunev, O.V. et al. Superconducting hot-electron bolometer mixer as element of thermal imager matrix. Tech. Phys. Lett. 36, 1006–1008 (2010). https://doi.org/10.1134/S1063785010110106

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  • DOI: https://doi.org/10.1134/S1063785010110106

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