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SuperSpec: development towards a full-scale filter bank

Wheeler, J. and Hailey-Dunsheath, S. and Shirokoff, E. and Barry, P. S. and Bradford, C. M. and Chapman, S. and Che, G. and Glenn, J. and Hollister, M. and Kovács, A. and LeDuc, H. G. and Mauskopf, P. and McGeehan, R. and McKenney, C. M. and O’Brient, R. and Padin, S. and Reck, T. and Rosset, C. and Shiu, C. and Tucker, C. E. and Williamson, R. and Zmuidzinas, J. (2016) SuperSpec: development towards a full-scale filter bank. 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. 99143K. ISBN 978-1-5106-0207-6. http://resolver.caltech.edu/CaltechAUTHORS:20161115-131427717

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Abstract

SuperSpec is a new spectrometer-on-a-chip technology for submm/mm-wave spectroscopy. SuperSpec stands out from other direct-detection submm spectrometer technologies in that the detectors are coupled to a series of resonant filters along a single microwave feedline instead of using dispersive optics. SuperSpec makes use of kinetic inductance detectors (KIDs) to detect radiation in this filter bank. The small profile of this design makes SuperSpec a natural choice to produce a multi-object spectrometer for tomographic mapping or galaxy redshift surveys. We have recently fabricated a device that is a 50 channel subset of a full 280 channel filter bank, which would cover the 190 - 310 GHz range at R = 275. Analysis of the data from this device informs us of the potential design modifications to enable a high-yield background-limited SuperSpec spectrometer. The results indicate that this subset filter bank can scale up to a full filter bank with only a few collisions in readout space and less than 20% variation in responsivity for the detectors. Additionally, the characterization of this and other prototype devices suggests that the noise performance is limited by generation-recombination noise. Finally, we find that the detectors are sufficiently sensitive for ground-based spectroscopy at R = 100, appropriate for tomographic mapping experiments. Further modifications are required to reach the background limit for R = 400, ideal for spectroscopy of individual galaxies.


Item Type:Book Section
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1117/12.2233798DOIArticle
http://proceedings.spiedigitallibrary.org/proceeding.aspx?articleid=2541315PublisherArticle
Additional Information:© 2016 SPIE. Society of Photo-Optical Instrumentation Engineers (SPIE). This work is supported in part by NASA Space Technology Research Fellowship NSTRF NNX15AQ09H and NSF AST ATI grant 1407457.
Funders:
Funding AgencyGrant Number
NASA Space Technology Research FellowshipNNX15AQ09H
NSFAST-1407457
Subject Keywords:Kinetic Inductance Detectors, Millimeter-wave, TiN, Noise Equivalent Power, SuperSpec, Spec- trometer, Filter-Bank, Critical Temperature
Record Number:CaltechAUTHORS:20161115-131427717
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20161115-131427717
Official Citation:J. Wheeler ; S. Hailey-Dunsheath ; E. Shirokoff ; P. S. Barry ; C. M. Bradford ; S. Chapman ; G. Che ; J. Glenn ; M. Hollister ; A. Kovács ; H. G. LeDuc ; P. Mauskopf ; R. McGeehan ; C. M. McKenney ; R. O’Brient ; S. Padin ; T. Reck ; C. Ross ; C. Shiu ; C. E. Tucker ; R. Williamson ; J. Zmuidzinas; SuperSpec: development towards a full-scale filter bank. Proc. SPIE 9914, Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy VIII, 99143K (July 27, 2016); doi:10.1117/12.2233798.
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:72035
Collection:CaltechAUTHORS
Deposited By: Ruth Sustaita
Deposited On:15 Nov 2016 21:31
Last Modified:15 Nov 2016 21:31

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