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

K. S. Karkare, P. S. Barry, C. M. Bradford, S. Chapman, S. Doyle, J. Glenn, S. Gordon, S. Hailey-Dunsheath, R. M.J. Janssen, A. Kovács, H. G. LeDuc, P. Mauskopf, R. McGeehan, J. Redford, E. Shirokoff, C. Tucker, J. Wheeler, J. Zmuidzinas

Research output: Contribution to journalArticlepeer-review

20 Scopus citations


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 ∼3×10-16WHz-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.

Original languageEnglish (US)
Pages (from-to)849-857
Number of pages9
JournalJournal of Low Temperature Physics
Issue number3-4
StatePublished - May 1 2020


  • Kinetic inductance detectors
  • Large Millimeter Telescope
  • NEP
  • ROACH2
  • Spectrometer
  • SuperSpec

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Materials Science(all)
  • Condensed Matter Physics


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