Thermo-electric charge-to-voltage converter with superconductor-insulator-normal tunnel junction for bolometer applications
Artikel i vetenskaplig tidskrift, 2010

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.

Thermo-electric bolometer

absorber

Quasiparticles

Charge-to-voltage converter

cold-electron bolometer

Superconductor-insulator-normal tunnel junction

electrothermal feedback

Superconducting

Författare

Leonid Kuzmin

Chalmers, Mikroteknologi och nanovetenskap (MC2), Kvantkomponentfysik

Physica C: Superconductivity and its Applications

0921-4534 (ISSN)

Vol. 470 21 1933-1936

Ämneskategorier

Fysik

DOI

10.1016/j.physc.2010.07.007