TY  - JOUR
AU  - Il’in, K. S.
AU  - Milostnaya, I. I.
AU  - Verevkin, A. A.
AU  - Gol’tsman, G. N.
AU  - Gershenzon, E. M.
AU  - Sobolewski, R.
PY  - 1998
DA  - 1998//
TI  - Ultimate quantum efficiency of a superconducting hot-electron photodetector
T2  - Appl. Phys. Lett.
JO  - Appl. Phys. Lett.
SP  - 3938
EP  - 3940
VL  - 73
IS  - 26
KW  - NbN SSPD
KW  - SNSPD
AB  - The quantum efficiency and current and voltage responsivities of fast hot-electron photodetectors, fabricated from superconducting NbN thin films and biased in the resistive state, have been shown to reach values of 340, 220 A/W, and 4×104 V/W,respectively, for infrared radiation with a wavelength of 0.79 μm. The characteristics of the photodetectors are presented within the general model, based on relaxation processes in the nonequilibrium electron heating of a superconducting thin film. The observed, very high efficiency and sensitivity of the superconductor absorbing the photon are explained by the high multiplication rate of quasiparticles during the avalanche breaking of Cooper pairs.
SN  - 0003-6951
UR  - http://aip.scitation.org/doi/10.1063/1.122942
UR  - https://doi.org/10.1063/1.122942
DO  - 10.1063/1.122942
N1  - exported from refbase (https://db.rplab.ru/refbase/show.php?record=1579), last updated on Tue, 25 May 2021 17:12:09 -0500
ID  - Ilin_etal1998
ER  -