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THz hot-electron photon counter

Show simple item record Karasik, Boris S. Sergeev, Andrei V. 2007-11-30T19:40:33Z 2007-11-30T19:40:33Z 2004-10-03
dc.identifier.citation IEEE Transactions on Applied Superconductivity Applied Superconductivity Conference, Jacksonville, Florida, October 3-8, 2004. en
dc.identifier.clearanceno 04-2926
dc.description.abstract We present a concept for the hot-electron transition-edge sensor capable of counting THz photons. The main need for such a sensor is a spectroscopy on future space telescopes where a background limited NEP ~ 10ˉ²° W/H¹´² is expected at around 1 THz. Under these conditions, the rate of photon arrival is very low and any currently imaginable detector with sufficient sensitivity will operate in the photon counting mode. The Hot-Electron Photon Counter based on a submicron-size Ti bridge has a very low heat capacity which provides a high enough energy resolution (~140 GHz) at 0.3 K. With the sensor time constant of a few microseconds, the dynamic range would be ~ 30 dB. The sensor couples to radiation via a planar antenna and is read by a SQUID amplifier or by a 1-bit RSFQ ADC. A compact array of the antenna-coupled counters can be fabricated on a silicon wafer without membranes. en
dc.description.sponsorship NASA/JPL en
dc.format.extent 448963 bytes
dc.format.mimetype application/pdf
dc.language.iso en_US en
dc.publisher Pasadena, CA : Jet Propulsion Laboratory, National Aeronautics and Space Administration, 2004. en
dc.subject radiation detectors en
dc.subject submillimeter wave detectors en
dc.subject bolometers en
dc.subject superconducting devices en
dc.title THz hot-electron photon counter en
dc.type Preprint en

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