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Responsivity boosting in FIR TiN LEKIDs using phonon recycling: simulations and array design

Fyhrie, Adalyn and McKenney, Christopher and Glenn, Jason and LeDuc, Henry G. and Gao, Jiansong and Day, Peter and Zmuidzinas, Jonas (2016) Responsivity boosting in FIR TiN LEKIDs using phonon recycling: simulations and array design. In: Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy VIII. Proceedings of SPIE. No.9914. Society of Photo-optical Instrumentation Engineers (SPIE) , Bellingham, WA, Art. No. 99142B. ISBN 9781510602076. http://resolver.caltech.edu/CaltechAUTHORS:20180621-080153616

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Abstract

To characterize further the cosmic star formation history at high redshifts, a large-area survey by a cryogenic 4-6 meter class telescope with a focal plane populated by tens of thousands of far-infrared (FIR, 30-300 μm) detectors with broadband detector noise equivalent powers (NEPs) on the order of 3×10^(-9) W/√ Hz is needed. Ideal detectors for such a surveyor do not yet exist. As a demonstration of one technique for approaching the ultra-low NEPs required by this surveyor, we present the design of an array of 96 350 µm KIDs that utilize phonon recycling to boost responsivity. Our KID array is fabricated with TiN deposited on a silicon-on-insulator (SOI) wafer, which is a 2 μm thick layer of silicon bonded to a thicker slab of silicon by a thin oxide layer. The backside thick slab is etched away underneath the absorbers so that the inductors are suspended on just the 2 μm membrane. The intent is that quasiparticle recombination phonons are trapped in the thin membrane, thereby increasing their likelihood of being re-absorbed by the KID to break additional Cooper pairs and boost responsivity. We also present a Monte-Carlo simulation that predicts the amount of signal boost expected from phonon recycling given different detector geometries and illumination strategies. For our current array geometry, the simulation predicts a measurable 50% boost in responsivity.


Item Type:Book Section
Related URLs:
URLURL TypeDescription
https://doi.org/10.1117/12.2231476DOIArticle
Additional Information:© 2016 Society of Photo-optical Instrumentation Engineers (SPIE). This work was funded by the Research and Technology Development Fund of the Jet Propulsion Laboratory.
Funders:
Funding AgencyGrant Number
JPL Research and Technology Development FundUNSPECIFIED
Subject Keywords:kinetic inductance detector, phonon, far-infrared, simulation
Record Number:CaltechAUTHORS:20180621-080153616
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20180621-080153616
Official Citation:Adalyn Fyhrie, Christopher McKenney, Jason Glenn, Henry G. LeDuc, Jiansong Gao, Peter Day, Jonas Zmuidzinas, "Responsivity boosting in FIR TiN LEKIDs using phonon recycling: simulations and array design", Proc. SPIE 9914, Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy VIII, 99142B (20 July 2016); doi: 10.1117/12.2231476; https://doi.org/10.1117/12.2231476
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:87296
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:21 Jun 2018 16:06
Last Modified:21 Jun 2018 16:06

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