Hailey-Dunsheath, S., Shirokoff, E., Barry, P. S., Bradford, C. M., Chattopadhyay, G., Day, P., Doyle, S.  ORCID: https://orcid.org/0000-0002-9054-986X, Hollister, M., Kovacs, A., LeDuc, H. G., Mauskopf, P. ORCID: https://orcid.org/0000-0001-6397-5516, McKenney, C. M., Monroe, R., O'Brient, R., Padin, S., Reck, T., Swenson, L., Tucker, C. E. ORCID: https://orcid.org/0000-0002-1851-3918 and Zmuidzinas, J.
2014.
Status of SuperSpec: a broadband, on-chip millimeter-wave spectrometer.
Presented at: SPIE Astronomical Telescopes + Instrumentation 2014,
Montreal, Canada,
22-27 June 2014.
Published in: Holland, Wayne S. and Zmuidzinas, Jonas eds.
Proceedings Volume 9153 Millimeter, Submillimeter and Far-Infrared Detectors and Instrumentation for Astronomy VII.
Proceedings of SPIE.
, vol.9153
Society of Photo-optical Instrumentation Engineers,
10.1117/12.2057229
|
Abstract
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: | Conference or Workshop Item - published (Paper) |
|---|---|
| Date Type: | Publication |
| Status: | Published |
| Schools: | Schools > Physics and Astronomy Schools > Mathematics |
| Publisher: | Society of Photo-optical Instrumentation Engineers |
| ISBN: | 978-081949621-8 |
| ISSN: | 0277-786X |
| Related URLs: | |
| Last Modified: | 02 Nov 2026 13:55 |
| URI: | https://orca.cardiff.ac.uk/id/eprint/155720 |
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