MKID development for SuperSpec: an on-chip, mm-wave, filter-bank spectrometer
- Others:
- Holland, Wayne S.
- Zmuidzinas, Jonas
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 T_c 9.2 K. The KIDs are designed to operate at hundreds of MHz and are fabricated from titanium nitride with a T_c 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 brie 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.
Additional Information
© 2012 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. E. Shirokoff, C. McKenney, and L. J. Swenson acknowledge support from the W. M. Keck Institute for Space Studies. M. I. Hollister, L. J. Swenson, and T. Reck acknowledge support from the NASA Postdoctoral Programme. P. S. Barry acknowledges the continuing support from the Science and Technology Facilities Council Ph.D studentship programme and grant programmes ST/G002711/1 and ST/J001449/1. Device fabrication was performed the JPL Microdevices Laboratory.Attached Files
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Additional details
- Eprint ID
- 37009
- Resolver ID
- CaltechAUTHORS:20130220-083445152
- 399131.02.06.03.43
- NASA
- Keck Institute for Space Studies (KISS)
- NASA Postdoctoral Program
- ST/G002711/1
- Science and Technology Facilities Council (STFC)
- ST/J001449/1
- Science and Technology Facilities Council (STFC)
- Created
-
2013-02-20Created from EPrint's datestamp field
- Updated
-
2021-11-09Created from EPrint's last_modified field
- Caltech groups
- Keck Institute for Space Studies
- Series Name
- Proceedings of the SPIE
- Series Volume or Issue Number
- 8452