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Status of SuperSpec: a broadband, on-chip millimeter-wave spectrometer

Hailey-Dunsheath, S. and Shirokoff, E. and Barry, P. S. and Bradford, C. M. and Chattopadhyay, G. and Day, P. and Doyle, S. and Hollister, M. and Kovacs, A. and LeDuc, H. G. and Mauskopf, P. and McKenney, C. M. and Monroe, R. and O'Brient, R. and Padin, S. and Reck, T. and Swenson, L. and Tucker, C. E. and Zmuidzinas, J. (2014) Status of SuperSpec: a broadband, on-chip millimeter-wave spectrometer. In: Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy VII. Proceedings of SPIE. Vol.9153. No.9153. Society of Photo-Optical Instrumentation Engineers , Bellingham, WA, Art. No. 91530M. ISBN 9780819496218.

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SuperSpec is a novel on-chip spectrometer we are developing for multi-object, moderate resolution (R = 100 − 500), large bandwidth (~1.65:1) submillimeter and millimeter survey spectroscopy of high-redshift galaxies. The spectrometer employs a filter bank architecture, and consists of a series of half-wave resonators formed by lithographically-patterned superconducting transmission lines. The signal power admitted by each resonator is detected by a lumped element titanium nitride (TiN) kinetic inductance detector (KID) operating at 100 – 200 MHz. We have tested a new prototype device that is more sensitive than previous devices, and easier to fabricate. We present a characterization of a representative R = 282 channel at f = 236 GHz, including measurements of the spectrometer detection efficiency, the detector responsivity over a large range of optical loading, and the full system optical efficiency. We outline future improvements to the current system that we expect will enable construction of a photon-noise-limited R = 100 filter bank, appropriate for a line intensity mapping experiment targeting the [CII] 158 μm transition during the Epoch of Reionization.

Item Type:Book Section
Related URLs:
URLURL TypeDescription Paper
Hailey-Dunsheath, S.0000-0002-8504-7988
Bradford, C. M.0000-0001-5261-7094
Chattopadhyay, G.0000-0001-7942-5025
Mauskopf, P.0000-0001-6397-5516
McKenney, C. M.0000-0003-4917-4872
Additional Information:© 2014 Society of Photo-Optical Instrumentation Engineers (SPIE). This project is supported by NASA Astrophysics Research and Analysis (APRA) grant no. 399131. Part of this research was carried out at the Jet Propulsion Laboratory, California Institute of Technology, under a contract with the National Aeronautics and Space Administration.
Group:Keck Institute for Space Studies
Funding AgencyGrant Number
Series Name:Proceedings of SPIE
Issue or Number:9153
Record Number:CaltechAUTHORS:20160328-103149915
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Official Citation:S. Hailey-Dunsheath ; E. Shirokoff ; P. S. Barry ; C. M. Bradford ; G. Chattopadhyay ; P. Day ; S. Doyle ; M. Hollister ; A. Kovacs ; H. G. LeDuc ; P. Mauskopf ; C. M. McKenney ; R. Monroe ; R. O'Brient ; S. Padin ; T. Reck ; L. Swenson ; C. E. Tucker and J. Zmuidzinas " Status of SuperSpec: a broadband, on-chip millimeter-wave spectrometer ", Proc. SPIE 9153, Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy VII, 91530M (August 19, 2014); doi:10.1117/12.2057229
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:65700
Deposited By: Colette Connor
Deposited On:30 Mar 2016 21:39
Last Modified:10 Nov 2021 23:48

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