Superspec: on-chip spectrometer design, characterization, and performance

Redford, J., Barry, Peter, Bradford, C. M., Chapman, S., Glenn, J., Hailey-Dunsheath, S., Janssen, R. M. J., Karkare, K. S., LeDuc, H. G., Mauskopf, P., McGeehan, R., Shirokoff, E., Wheeler, J. and Zmuidzinas, J. 2022. Superspec: on-chip spectrometer design, characterization, and performance. Journal of Low Temperature Physics 209 (3-4) , pp. 548-555. 10.1007/s10909-022-02866-x

Full text not available from this repository.

Abstract

SuperSpec is an integrated, on-chip spectrometer for millimeter and sub-millimeter astronomy intended to pave the way for large-scale, multi-beam spectrometer instruments. SuperSpec is demonstrating a three beam, dual-polarization instrument for observing star formation in distant galaxies on the Large Millimeter Telescope , a 50 m telescope on Volcan Sierra Negra in Mexico. SuperSpec provides moderate resolution (R∼270−290) in the 1 mm atmospheric window (200–300 GHz) with a lithographically patterned filterbank on a 3.5 cm x 5.5 cm chip. The filterbank intended for deployment is implemented in niobium, fed by a lensed antenna, and using a extremely low-volume (2.6μm3) titanium nitride lumped element kinetic inductor detectors (LEKIDs) as the sensors. The small size of the spectrometer and inherent multiplexibility of the kinetic inductance detectors will allow the future use of SuperSpec in larger, multi-pixel/multi-object spectrometers far beyond the three-pixel spectrometer being demonstrated soon. We report the design of the spectrometer, laboratory characterization of devices for the upcoming SuperSpec deployment. This involves laboratory testing of the filterbank spectral response, and observing noise in the TiN KIDs

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Physics and Astronomy
Publisher:	Springer
ISSN:	0022-2291
Date of Acceptance:	30 August 2022
Last Modified:	12 Jan 2023 14:45
URI:	https://orca.cardiff.ac.uk/id/eprint/155682

Actions (repository staff only)

Edit Item