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MKID development for SuperSpec: an on-chip, mm-wave, filter-bank spectrometer
- Source :
- SPIE Proceedings.
- Publication Year :
- 2012
- Publisher :
- SPIE, 2012.
-
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 2K. 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.<br />As submitted, except that "in prep" references have been updated
- Subjects :
- Materials science
Spectrometer
Physics::Instrumentation and Detectors
business.industry
Astrophysics::Instrumentation and Methods for Astrophysics
FOS: Physical sciences
02 engineering and technology
021001 nanoscience & nanotechnology
Filter bank
01 natural sciences
Microstrip
Wavelength
Resonator
Optics
Filter (video)
Infrared window
0103 physical sciences
Millimeter
Astrophysics - Instrumentation and Methods for Astrophysics
010306 general physics
0210 nano-technology
business
Instrumentation and Methods for Astrophysics (astro-ph.IM)
Subjects
Details
- ISSN :
- 0277786X
- Database :
- OpenAIRE
- Journal :
- SPIE Proceedings
- Accession number :
- edsair.doi.dedup.....ecc1c4fc64a08a4034a9c21b9ddfdc12