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Full-Array Noise Performance of Deployment-Grade SuperSpec mm-Wave On-Chip Spectrometers

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 ma...

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Bibliographic Details
Published in:Journal of low temperature physics 2020-05, Vol.199 (3-4), p.849-857
Main Authors: Karkare, K. S., Barry, P. S., Bradford, C. M., Chapman, S., Doyle, S., 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., Wheeler, J., Zmuidzinas, J.
Format: Article
Language:English
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Summary: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 spectrometer measured using deployment-ready RF hardware and software. We report typical noise equivalent powers through the full device of ∼ 3 × 10 - 16 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.
ISSN:0022-2291
1573-7357
DOI:10.1007/s10909-020-02407-4