%0 Journal Article
%T CSIP – a novel photon-counting detector applicable for the SPICA far-infrared instrument
%A Doi, Y.
%A Wang, Z.
%A Ueda, T.
%A Nickels, P.
%A Komiyama, S.
%A Patrashin, M.
%A Hosako, I.
%A Matsuura, S.
%A Shirahata, M.
%A Sawayama, Y.
%A Kawada, M.
%J SPICA
%D 2009
%N SPICA Workshop 2009
%F Doi_etal2009
%O exported from refbase (https://db.rplab.ru/refbase/show.php?record=672), last updated on Wed, 14 Dec 2011 21:27:09 -0600
%X We describe a novel GaAs/AlGaAs double-quantumwell device for the infrared photon detection, called ChargeSensitive Infrared Phototransistor (CSIP). The principle of CSIP detector is the photo-excitation of an intersubband transition in a QW as an charge integrating gate and the signal ampli<ef><ac><81>cation by another QW as a channel with very high gain, which provides us with extremely high responsivity (104 – 106 A/W). It has been demonstrated that the CSIP designed for the mid-infrared wavelength (14.7 μm) has an excellent sensitivity; the noise equivalent power (NEP) of 7 × 10-19 W/ with the quantum effciency of ~ 2%. Advantages of the CSIP against the other highly sensitive detectors are, huge dynamic range of > 106, low output impedance of 103 – 104 Ohms, and relatively high operation temperature (> 2 K). We discuss possible applications of the CSIP to FIR photon detection covering 35 – 60 μm waveband, which is a gap uncovered with presently available photoconductors.
%K detectors
%K Infrared