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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. https://resolver.caltech.edu/CaltechAUTHORS:20200515-154728331

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Abstract

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
https://doi.org/10.1007/s10909-020-02377-7DOIArticle
ORCID:
AuthorORCID
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
Funders:
Funding AgencyGrant Number
NASA14-APRA14-98
Subject Keywords:Kinetic inductance detector; Far-infrared; Quasiparticle recombination
Issue or Number:3-4
Record Number:CaltechAUTHORS:20200515-154728331
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20200515-154728331
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). https://doi.org/10.1007/s10909-020-02377-7
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:103250
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:15 May 2020 22:52
Last Modified:15 May 2020 22:52

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