A Caltech Library Service

Decay Times of Optical Pulses for Aluminum CPW KIDs

Fyhrie, A. and Day, P. and Glenn, J. and Leduc, H. and McKenney, C. and Perido, J. and Zmuidzinas, J. (2020) Decay Times of Optical Pulses for Aluminum CPW KIDs. Journal of Low Temperature Physics, 199 (3-4). pp. 688-695. ISSN 0022-2291. doi:10.1007/s10909-020-02377-7.

Full text is not posted in this repository. Consult Related URLs below.

Use this Persistent URL to link to this item:


The recombination rate of quasiparticle excitations and metal film thickness are both important factors in determining the sensitivity of kinetic inductance detectors (KIDs). To maximize KID sensitivity, we aim to quantify the interdependence of these two detector attributes. We have measured the decay times of optical pulses produced by illuminating aluminum CPW resonators with an infrared LED. Measurements were made using both 1/4-wavelength and 1/2-wavelength resonators for film thicknesses between 20 and 50 nm for a range of temperatures and microwave readout powers. We observed several millisecond decay times for all thicknesses, with an elevated decay time (∼5 ms) and critical temperature (∼1.5 K) for the 20-nm-thick film.

Item Type:Article
Related URLs:
URLURL TypeDescription
Glenn, J.0000-0001-7527-2017
McKenney, C.0000-0003-4917-4872
Perido, J.0000-0003-1679-7627
Additional Information:© 2020 Springer Nature Switzerland AG. Received 20 August 2019; Accepted 30 January 2020; Published 28 February 2020.
Group:Astronomy Department
Funding AgencyGrant Number
Subject Keywords:Kinetic inductance detector; Far-infrared; Quasiparticle recombination
Issue or Number:3-4
Record Number:CaltechAUTHORS:20200515-154728331
Persistent URL:
Official Citation:Fyhrie, A., Day, P., Glenn, J. et al. Decay Times of Optical Pulses for Aluminum CPW KIDs. J Low Temp Phys 199, 688–695 (2020).
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:103250
Deposited By: Tony Diaz
Deposited On:15 May 2020 22:52
Last Modified:16 Nov 2021 18:19

Repository Staff Only: item control page