TY  - ABST
AU  - Semenov, Alexei
AU  - Hübers, Heinz-Wilhelm
AU  - Engel, Andreas
AU  - Gol'tsman, Gregory N.
A2  - Far-IR, Sub-mm & MM Detector Technology Workshop, held 1-3 April 2002
PY  - 2002
DA  - 2002//
TI  - Background limited superconducting quantum detector for astronomy
T2  - NASA/ADS
BT  - NASA/ADS
KW  - SQD
AB  - We present the concept of the superconducting quantum detector for astronomy. Response to a single absorbed photon appears due to successive formation of a normal spot and phase-slip-centers in a narrow strip carrying sub-critical supercurrent. The detector simultaneously has a moderate energy resolution and a variable cut-off wavelength depending on both the material used and operation conditions. We simulated performance of the background-limited direct detector having the 100- micrometer cut-off wavelength. Low dark count rate will allow to realize 10-21 W Hz-1/2 noise equivalent power at 4 K background radiation. The intrinsic recovery time of the counter is rather determined by diffusion of nonequilibrium electrons, thus, thermal fluctuations do not hamper energy resolution of the detector. Provided an appropriate readout technique, the resolution should be better than 1/20 at 50- micrometer wavelength. Planar layout and relatively simple technology favor integration of the detector into an array.
UR  - https://ui.adsabs.harvard.edu/abs/2002fism.workE..62S
N1  - id.62
ID  - Semenov_etal2002
ER  -