TY  - JOUR
AU  - Gupta, D.
AU  - Kadin, A. M.
PY  - 1999
DA  - 1999//
TI  - Single-photon-counting hotspot detector with integrated RSFQ readout electronics
JO  - IEEE Trans. Appl. Supercond.
SP  - 4487
EP  - 4490
VL  - 9
IS  - 2
KW  - RSFQ
KW  - SSPD
KW  - SNSPD
AB  - Absorption of an infrared photon in an ultrathin film (such as 10-nm NbN) creates a localized nonequilibrium hotspot on the submicron length scale and sub-ns time scale. If a strip /spl sim/1 /spl mu/m wide is biased in the middle of the superconducting transition, this hotspot will lead to a resistance pulse with amplitude proportional to the energy of the incident photon. This resistance pulse, in turn, can be converted to a current pulse and inductively coupled to a SQUID amplifier with a digitized output, operating at 4 K or above. A preliminary design analysis indicates that this data can be processed on-chip, using ultrafast RSFQ digital circuits, to obtain a sensitive infrared detector for wavelengths up to 10 /spl mu/m and beyond, with bandwidth of 1 GHz, that counts individual photons and measures their energy with 25 meV resolution. This proposed device combines the speed of a hot-electron bolometer with the single-photon-counting ability of a transition-edge microcalorimeter, to obtain an infrared detector with sensitivity, speed, and spectral selectivity that are unmatched by any alternative technology.
UR  - https://doi.org/10.1109/77.784022
DO  - 10.1109/77.784022
N1  - exported from refbase (https://db.rplab.ru/refbase/show.php?record=1080), last updated on Fri, 03 Jun 2016 09:10:17 -0500
ID  - Gupta+Kadin1999
ER  -