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Proceedings Paper

Fabrication of an absorber-coupled MKID detector and readout for sub-millimeter and far-infrared astronomy
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Paper Abstract

We have fabricated absorber-coupled microwave kinetic inductance detector (MKID) arrays for sub-millimeter and farinfrared astronomy. Each detector array is comprised of λ/2 stepped impedance resonators, a 1.5μm thick silicon membrane, and 380μm thick silicon walls. The resonators consist of parallel plate aluminum transmission lines coupled to low impedance Nb microstrip traces of variable length, which set the resonant frequency of each resonator. This allows for multiplexed microwave readout and, consequently, good spatial discrimination between pixels in the array. The Al transmission lines simultaneously act to absorb optical power and are designed to have a surface impedance and filling fraction so as to match the impedance of free space. Our novel fabrication techniques demonstrate high fabrication yield of MKID arrays on large single crystal membranes and sub-micron front-to-back alignment of the microstrip circuit.

Paper Details

Date Published: 15 July 2010
PDF: 10 pages
Proc. SPIE 7741, Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy V, 77410P (15 July 2010); doi: 10.1117/12.857281
Show Author Affiliations
Ari-David Brown, NASA Goddard Space Flight Ctr. (United States)
MEI Technologies, Inc. (United States)
Wen-Ting Hsieh, NASA Goddard Space Flight Ctr. (United States)
S. Harvey Moseley, NASA Goddard Space Flight Ctr. (United States)
Thomas R. Stevenson, NASA Goddard Space Flight Ctr. (United States)
Kongpop U-yen, NASA Goddard Space Flight Ctr. (United States)
Edward J. Wollack, NASA Goddard Space Flight Ctr. (United States)


Published in SPIE Proceedings Vol. 7741:
Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy V
Wayne S. Holland; Jonas Zmuidzinas, Editor(s)

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