PT Unknown
AU Ryabchun, S
   Korneev, A
   Matvienko, V
   Smirnov, K
   Kouminov, P
   Seleznev, V
   Kaurova, N
   Voronov, B
   Gol’tsman, GN
TI Superconducting single photon detectors array based on hot electron phenomena
SE Proc. 15[super:th] Int. Symp. Space Terahertz Technol.
PY 2004
BP 242
EP 247
DE NbN SSPD arrays; SNSPD
AB In this paper we propose to use time domain multiplexing for large format arrays of superconducting single photon detectors (SSPDs) of the terahertz, visible and infrared frequency ranges based on ultrathin superconducting NbN films. Effective realization of time domain multiplexing for SSPD arrays is possible due to a short electric pulse of the SSPD as response to radiation quantum absorption, picosecond jitter and extremely low noise equivalent power (NEP). We present experimental results of testing 2×2 arrays in the infrared waveband. The measured noise equivalent power in the infrared and expected for the terahertz waveband is 10 - 21 WHz -1/2 . The best quantum efficiency (QE) of SSPD is 50% at 1.3 µm wavelength.
ER