CSIP - a Novel Photon-Counting Detector Applicable for the SPICA Far-Infrared Instrument
Abstract
We describe a novel GaAs/AlGaAs double-quantum-well device for the infrared photon detection, called Charge-Sensitive 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 amplification by another QW as a channel with very high gain, which provides us with extremely high responsivity (10^4 -- 10^6 A/W). It has been demonstrated that the CSIP designed for the mid-infrared wavelength (14.7 um) has an excellent sensitivity; the noise equivalent power (NEP) of 7x10^-19 W/rHz with the quantum efficiency of ~2%. Advantages of the CSIP against the other highly sensitive detectors are, huge dynamic range of >10^6, low output impedance of 10^3 -- 10^4 Ohms, and relatively high operation temperature (>2K). We discuss possible applications of the CSIP to FIR photon detection covering 35 -- 60 um waveband, which is a gap uncovered with presently available photoconductors.
Keywords
Cite
@article{arxiv.0911.5194,
title = {CSIP - a Novel Photon-Counting Detector Applicable for the SPICA Far-Infrared Instrument},
author = {Y. Doi and Z. Wang and T. Ueda and P. Nickels and S. Komiyama and M. Patrashin and I. Hosako and S. Matsuura and M. Shirahata and Y. Sawayama and M. Kawada},
journal= {arXiv preprint arXiv:0911.5194},
year = {2015}
}
Comments
To appear in Proc. Workshop "The Space Infrared Telescope for Cosmology & Astrophysics: Revealing the Origins of Planets and Galaxies". Eds. A.M. Heras, B. Swinyard, K. Isaak, and J.R. Goicoechea