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Title:
Optical Measurements of SuperSpec: A Millimeter-Wave On-Chip Spectrometer
Authors:
Hailey-Dunsheath, S.; Barry, P. S.; Bradford, C. M.; Chattopadhyay, G.; Day, P.; Doyle, S.; Hollister, M.; Kovacs, A.; LeDuc, H. G.; Llombart, N.; Mauskopf, P.; McKenney, C.; Monroe, R.; Nguyen, H. T.; O'Brient, R.; Padin, S.; Reck, T.; Shirokoff, E.; Swenson, L.; Tucker, C. E.; Zmuidzinas, J.
Affiliation:
AA(California Institute of Technology, Pasadena, CA , USA), AB(School of Physics & Astronomy, Cardiff University, Cardiff, UK), AC(Jet Propulsion Laboratory, Pasadena, CA , USA), AD(Jet Propulsion Laboratory, Pasadena, CA , USA), AE(Jet Propulsion Laboratory, Pasadena, CA , USA), AF(School of Physics & Astronomy, Cardiff University, Cardiff, UK), AG(California Institute of Technology, Pasadena, CA , USA), AH(California Institute of Technology, Pasadena, CA , USA; Institute for Astrophysics, University of Minnesota, Minneapolis, MN , USA), AI(Jet Propulsion Laboratory, Pasadena, CA , USA), AJ(Optics Department of the Complutense University of Madrid, Madrid, Spain), AK(Arizona State University, Tempe, AZ , USA), AL(California Institute of Technology, Pasadena, CA , USA), AM(Jet Propulsion Laboratory, Pasadena, CA , USA), AN(Jet Propulsion Laboratory, Pasadena, CA , USA), AO(California Institute of Technology, Pasadena, CA , USA), AP(California Institute of Technology, Pasadena, CA , USA), AQ(Jet Propulsion Laboratory, Pasadena, CA , USA), AR(California Institute of Technology, Pasadena, CA , USA), AS(California Institute of Technology, Pasadena, CA , USA), AT(School of Physics & Astronomy, Cardiff University, Cardiff, UK), AU(California Institute of Technology, Pasadena, CA , USA)
Publication:
Journal of Low Temperature Physics, Volume 176, Issue 5-6, pp. 841-847 (JLTP Homepage)
Publication Date:
09/2014
Origin:
SPRINGER
Keywords:
Kinetic inductance detector, Millimeter-wave, Spectroscopy
Abstract Copyright:
(c) 2014: Springer Science+Business Media New York
DOI:
10.1007/s10909-013-1068-2
Bibliographic Code:
2014JLTP..176..841H

Abstract

SuperSpec is a novel on-chip spectrometer we are developing for (sub)millimeter wavelength astronomy. Our approach utilizes a filterbank of moderate resolution ( channels, coupled to lumped element kinetic inductance detectors (KIDs), all integrated onto a single silicon chip. The channels are half-wave resonators formed by lithographically depositing segments of superconducting transmission line, and the KIDs are titanium nitride resonators. Here we present optical measurements of a first generation prototype, operating in the 180-280 GHz frequency range. We have used a coherent source to measure the spectral profiles of 17 channels, which achieve linewidths corresponding to quality factors as high as consistent with the designed values plus additional dissipation characterized by We have also used a Fourier Transform Spectrometer to characterize the spectral purity of all 72 channels on the chip, and measure typical out of band responses dB below the peak response.
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