Status of SuperSpec: a broadband, on-chip millimeter-wave spectrometer
- Others:
- Holland, Wayne S.
- Zmuidzinas, Jonas
Abstract
SuperSpec is a novel on-chip spectrometer we are developing for multi-object, moderate resolution (R = 100 − 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 μm transition during the Epoch of Reionization.
Additional Information
© 2014 Society of Photo-Optical Instrumentation Engineers (SPIE). This project is supported by NASA Astrophysics Research and Analysis (APRA) grant no. 399131.02.06.03.43. Part of this research was carried out at the Jet Propulsion Laboratory, California Institute of Technology, under a contract with the National Aeronautics and Space Administration.Attached Files
Published - 91530M.pdf
Submitted - superspec.pdf
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Additional details
- Eprint ID
- 65700
- Resolver ID
- CaltechAUTHORS:20160328-103149915
- 399131.02.06.03.43
- NASA
- NASA/JPL/Caltech
- Created
-
2016-03-30Created from EPrint's datestamp field
- Updated
-
2021-11-10Created from EPrint's last_modified field
- Caltech groups
- Keck Institute for Space Studies
- Series Name
- Proceedings of SPIE
- Series Volume or Issue Number
- 9153