MKID development for SuperSpec: An on-chip, mm-wave, filter-bank spectrometer

E. Shirokoff, P. S. Barry, C. M. Bradford, G. Chattopadhyay, P. Day, S. Doyle, S. Hailey-Dunsheath, M. I. Hollister, A. Kovács, C. McKenney, H. G. Leduc, N. Llombart, Daniel P Marrone, P. Mauskopf, R. O'Brient, S. Padin, T. Reck, L. J. Swenson, J. Zmuidzinas

Research output: Chapter in Book/Report/Conference proceedingConference contribution

28 Scopus citations

Abstract

SuperSpec is an ultra-compact spectrometer-on-a-chip for millimeter and submillimeter wavelength astronomy. Its very small size, wide spectral bandwidth, and highly multiplexed readout will enable construction of powerful multibeam spectrometers for high-redshift observations. The spectrometer consists of a horn-coupled microstrip feedline, a bank of narrow-band superconducting resonator filters that provide spectral selectivity, and kinetic inductance detectors (KIDs) that detect the power admitted by each filter resonator. The design is realized using thin-film lithographic structures on a silicon wafer. The mm-wave microstrip feedline and spectral filters of the first prototype are designed to operate in the band from 195-310 GHz and are fabricated from niobium with at Tc of 9:2K: The KIDs are designed to operate at hundreds of MHz and are fabricated from titanium nitride with a Tc of ∼ 2 K. Radiation incident on the horn travels along the mm-wave microstrip, passes through the frequency-selective filter, and is finally absorbed by the corresponding KID where it causes a measurable shift in the resonant frequency. In this proceedings, we present the design of the KIDs employed in SuperSpec and the results of initial laboratory testing of a prototype device. We will also briefly describe the ongoing development of a demonstration instrument that will consist of two 500-channel, R=700 spectrometers, one operating in the 1-mm atmospheric window and the other covering the 650 and 850 micron bands.

Original languageEnglish (US)
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
Volume8452
DOIs
StatePublished - 2012
EventMillimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy VI - Amsterdam, Netherlands
Duration: Jul 3 2012Jul 6 2012

Other

OtherMillimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy VI
CountryNetherlands
CityAmsterdam
Period7/3/127/6/12

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Keywords

  • Kinetic inductance detector
  • MKID
  • Mm-wavelength
  • Resonator
  • Spectroscopy
  • Titanium nitride

ASJC Scopus subject areas

  • Applied Mathematics
  • Computer Science Applications
  • Electrical and Electronic Engineering
  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this

Shirokoff, E., Barry, P. S., Bradford, C. M., Chattopadhyay, G., Day, P., Doyle, S., Hailey-Dunsheath, S., Hollister, M. I., Kovács, A., McKenney, C., Leduc, H. G., Llombart, N., Marrone, D. P., Mauskopf, P., O'Brient, R., Padin, S., Reck, T., Swenson, L. J., & Zmuidzinas, J. (2012). MKID development for SuperSpec: An on-chip, mm-wave, filter-bank spectrometer. In Proceedings of SPIE - The International Society for Optical Engineering (Vol. 8452). [84520R] https://doi.org/10.1117/12.927070