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Quantum Response of a Bolometer Based on the SINIS Structure with a Suspended Absorber

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Abstract

Bolometers based on the superconductor–insulator–normal-metal–insulator–superconductor (SINIS) structure with an absorber suspended above the substrate are developed, fabricated, and experimentally studied in the terahertz frequency range. In contrast to the previously studied bolometers with an absorber located directly on the substrate, the real bolometric mode of operation is achieved, i.e., there is more than one excited electron per quantum of electromagnetic radiation (the quantum efficiency is larger than 1). A quantum efficiency of fifteen electrons per quantum of radiation with a frequency of 350 GHz was achieved in the studied bolometers.

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Funding

This study was conducted within the framework of State assignment no. 0030-2019-0003 for the Institute of Radio Engineering and Electronics, Russian Academy of Sciences. The samples were fabricated and studied using a unique scientific setup (UNU no. 352529).

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Authors and Affiliations

  1. Kotel’nikov Institute of Radio Engineering and Electronics, Russian Academy of Sciences, Moscow, Russia

    R. A. Yusupov, A. M. Chekushkin, D. V. Nagirnaya & M. A. Tarasov

  2. Institute of Applied Physics, Russian Academy of Sciences, Nizhny Novgorod, Russia

    A. A. Gunbina

  3. Alekseev State Technical University, Nizhny Novgorod, Russia

    A. A. Gunbina

  4. Kapitza Institute for Physical Problems, Russian Academy of Sciences, Moscow, Russia

    S. A. Lemzyakov & V. S. Edel’man

  5. Moscow Institute of Physics and Technology, Dolgoprudny, Moscow oblast, Russia

    S. A. Lemzyakov

Authors
  1. R. A. Yusupov
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  2. A. A. Gunbina
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  3. A. M. Chekushkin
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  4. D. V. Nagirnaya
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  5. S. A. Lemzyakov
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  6. V. S. Edel’man
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  7. M. A. Tarasov
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Corresponding author

Correspondence to R. A. Yusupov.

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The authors declare that they have no conflicts of interest.

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Translated by O. Kadkin

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Yusupov, R.A., Gunbina, A.A., Chekushkin, A.M. et al. Quantum Response of a Bolometer Based on the SINIS Structure with a Suspended Absorber. Phys. Solid State 62, 1567–1570 (2020). https://doi.org/10.1134/S106378342009036X

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  • DOI: https://doi.org/10.1134/S106378342009036X

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