Status of SuperSpec: A broadband, on-chip millimeter-wave spectrometer

S. Hailey-Dunsheath, E. Shirokoff, P. S. Barry, C. M. Bradford, G. Chattopadhyay, P. Day, S. Doyle, M. Hollister, A. Kovacs, H. G. Leduc, P. Mauskopf, C. M. McKenney, R. Monroe, R. O'Brient, S. Padin, T. Reck, L. Swenson, C. E. Tucker, J. Zmuidzinas

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

11 Scopus citations


SuperSpec is a novel on-chip spectrometer we are developing for multi-object, moderate resolution (R = 100 â' 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 1/4m transition during the Epoch of Reionization.

Original languageEnglish (US)
Title of host publicationMillimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy VII
EditorsJonas Zmuidzinas, Wayne S. Holland
ISBN (Electronic)9780819496218
StatePublished - 2014
Externally publishedYes
EventMillimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy VII - Montreal, Canada
Duration: Jun 24 2014Jun 27 2014

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X


OtherMillimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy VII


  • Kinetic Inductance Detector
  • Millimeter-Wave
  • Spectroscopy
  • Titanium Nitride

ASJC Scopus subject areas

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


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