학술논문
A 25-micron single photon sensitive kinetic inductance detector
Document Type
Working Paper
Author
Day, Peter K.; Cothard, Nicholas F.; Albert, Christopher; Foote, Logan; Kane, Elijah; Eom, Byeong H.; Thakur, Ritoban Basu; Janssen, Reinier M. J.; Beyer, Andrew; Echternach, Pierre; van Berkel, Sven; Hailey-Dunsheath, Steven; Stevenson, Thomas R.; Dabironezare, Shahab; Baselmans, Jochem J. A.; Glenn, Jason; Bradford, C. Matt; Leduc, Henry G.
Source
Subject
Language
Abstract
We report measurements characterizing the performance of a kinetic inductance detector array designed for a wavelength of 25 microns and very low optical background level suitable for applications such as a far-infrared instrument on a cryogenically cooled space telescope. In a pulse counting mode of operation at low optical flux, the detectors can resolve individual 25-micron photons. In an integrating mode, the detectors remain photon noise limited over more than six orders of magnitude in absorbed power from 70 zW to 200 fW, with a limiting NEP of 4.6 x 10^-20 W/rtHz at 1 Hz. In addition, the detectors are highly stable with flat power spectra under optical load down to 1 mHz. Operational parameters of the detector are determined including the efficiency of conversion of the incident optical power into quasiparticles in the aluminum absorbing element and the quasiparticle self-recombination constant.
Comment: 35 pages, 18 figures
Comment: 35 pages, 18 figures