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Thermo-electric charge-to-voltage converter with superconductor-insulator-normal tunnel junction for bolometer applications

Leonid Kuzmin (Institutionen för mikroteknologi och nanovetenskap, Kvantkomponentfysik)
Physica C-Superconductivity and Its Applications (0921-4534). Vol. 470 (2010), 21, p. 1933-1936.
[Artikel, refereegranskad vetenskaplig]

A novel type of the zero-biased thermo-electric bolometer (TEB) is proposed. The bolometer is based on a charge-to-voltage converter (CVC) with a superconductor-insulator-normal (SIN) tunnel junction and a superconducting absorber. The absorption of photons in the absorber leads to excitation of quasiparticles with some fraction of charge imbalance, tunneling through the SIN junction in zero-biased mode and generation of voltage. The thermoelectric voltage is determined by accumulation of tunneling charge in an external capacitance. Conversion efficiency is very high and voltage values comparable with a superconducting gap are easily achieved. The zero-biased CVC-TEB can be effectively used for creation of an array of bolometers and multi-pixel detection systems.

Nyckelord: Thermo-electric bolometer, Charge-to-voltage converter, Superconductor-insulator-normal tunnel junction, Superconducting, absorber, Quasiparticles, cold-electron bolometer, electrothermal feedback



Denna post skapades 2011-01-17. Senast ändrad 2012-02-17.
CPL Pubid: 134203

 

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Institutioner (Chalmers)

Institutionen för mikroteknologi och nanovetenskap, Kvantkomponentfysik

Ämnesområden

Fysik

Chalmers infrastruktur