Superconducting thermo-electric bolometer for cosmology instruments
Paper i proceeding, 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 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.


Leonid Kuzmin

Chalmers, Mikroteknologi och nanovetenskap (MC2), Kvantkomponentfysik

21st International Symposium on Space Terahertz Technology 2010, ISSTT 2010; Oxford; United Kingdom; 23 March 2010 through 25 March 2010