Comparison of an ultra-highly sensitive THz-wave detector (CSIP) with a commercially available detector MCT

Abstract

An ultra-highly sensitive THz detector CSIP is compared with a commercially available detector MCT to estimate the sensitivity in a condition simulating an actual operating condition. THz light generated by a homemade miniature heater is emitted through a pinhole, collimated with a Ge lens and is incident on each detector. The sensitivity of CSIP is found to be around 300 times higher than MCT. This result is consistent with previously reported value obtained in a cryogenic confined system and demonstrates excellent performance of CSIP also in realistic conditions.