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Full-array noise performance of deployment-grade SuperSpec mm-wave on-chip spectrometers

Karkare, K. S., Barry, P. S., Bradford, C. M., Chapman, S., Doyle, S. ORCID:, Glenn, J., Gordon, S., Hailey-Dunsheath, S., Janssen, R. M. J., Kovács, A., LeDuc, H. G., Mauskopf, P., McGeehan, R., Redford, J., Shirokoff, E., Tucker, C. ORCID:, Wheeler, J. and Zmuidzinas, J. 2020. Full-array noise performance of deployment-grade SuperSpec mm-wave on-chip spectrometers. Journal of Low Temperature Physics 199 , pp. 849-857. 10.1007/s10909-020-02407-4

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SuperSpec is an on-chip filter bank spectrometer designed for wideband moderate-resolution spectroscopy at millimeter wavelengths, employing TiN kinetic inductance detectors. SuperSpec technology will enable large-format spectroscopic integral field units suitable for high-redshift line intensity mapping and multi-object spectrographs. In previous results, we have demonstrated noise performance in individual detectors suitable for photon noise-limited ground-based observations at excellent mm-wave sites. In these proceedings, we present the noise performance of a full R∼275 R∼275 spectrometer measured using deployment-ready RF hardware and software. We report typical noise equivalent powers through the full device of ∼3× 10 −16 ∼3×10−16 W Hz −1/2 W Hz−1/2 at expected sky loadings, which are photon noise dominated. Based on these results, we plan to deploy a six-spectrometer demonstration instrument to the Large Millimeter Telescope in early 2020.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Physics and Astronomy
Publisher: Springer Verlag
ISSN: 0022-2291
Date of First Compliant Deposit: 10 March 2020
Date of Acceptance: 8 February 2020
Last Modified: 07 Nov 2023 12:01

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