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Proceedings Paper

Transition-edge superconducting antenna-coupled bolometer
Author(s): Cynthia L. Hunt; James J. Bock; Peter K. Day; Alexey Goldin; Andrew E. Lange; Henry G. LeDuc; Anastasios Vayonakis; Jonas Zmuidzinas
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Paper Abstract

We report test results for a single pixel antenna-coupled bolometric detector. Our device consists of a dual slot microstrip antenna coupled to an Al/Ti/Au voltage-biased transition edge superconducting bolometer (TES). The coupling architecture involves propagating the signal along superconducting microstrip lines and terminating the lines at a normal metal resistor colocated with a TES on a thermally isolated island. The device, which is inherently polarization sensitive, is optimized for 140 GHz band measurements. In the thermal bandwidth of the TES, we measure a noise equivalent power of 2.0 × 10-17 W/√Hz in dark tests that agrees with calculated NEP including only contributions from thermal, Johnson and amplifier noise. We do not measure any excess noise at frequencies between 1 and 200 Hz. We measure a thermal conductance G ~5.5 × 10-11 W/K. We measure a thermal time constant as low as 437μs at 3μV bias when stimulating the TES directly using an LED.

Paper Details

Date Published: 17 February 2003
PDF: 4 pages
Proc. SPIE 4855, Millimeter and Submillimeter Detectors for Astronomy, (17 February 2003); doi: 10.1117/12.459110
Show Author Affiliations
Cynthia L. Hunt, California Institute of Technology (United States)
James J. Bock, Jet Propulsion Lab. (United States)
Peter K. Day, Jet Propulsion Lab. (United States)
Alexey Goldin, Jet Propulsion Lab. (United States)
Andrew E. Lange, California Institute of Technology (United States)
Henry G. LeDuc, Jet Propulsion Lab. (United States)
Anastasios Vayonakis, California Institute of Technology (United States)
Jonas Zmuidzinas, California Institute of Technology (United States)

Published in SPIE Proceedings Vol. 4855:
Millimeter and Submillimeter Detectors for Astronomy
Thomas G. Phillips; Jonas Zmuidzinas, Editor(s)

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