Transition-edge superconducting antenna-coupled bolometer

Cynthia L. Hunt; James J. Bock; Peter K. Day; Alexey Goldin; Andrew E. Lange; Henry G. LeDuc; Anastasios Vayonakis; Jonas Zmuidzinas

doi:10.1117/12.459110

17 February 2003 Transition-edge superconducting antenna-coupled bolometer

Cynthia L. Hunt, James J. Bock, Peter K. Day, Alexey Goldin, Andrew E. Lange, Henry G. LeDuc, Anastasios Vayonakis, Jonas Zmuidzinas

Author Affiliations +

Proceedings Volume 4855, Millimeter and Submillimeter Detectors for Astronomy; (2003) https://doi.org/10.1117/12.459110
Event: Astronomical Telescopes and Instrumentation, 2002, Waikoloa, Hawai'i, United States

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^-17W/√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^-11W/K. We measure a thermal time constant as low as 437μs at 3μV bias when stimulating the TES directly using an LED.

Citation Download Citation

Cynthia L. Hunt, James J. Bock, Peter K. Day, Alexey Goldin, Andrew E. Lange, Henry G. LeDuc, Anastasios Vayonakis, and Jonas Zmuidzinas "Transition-edge superconducting antenna-coupled bolometer", Proc. SPIE 4855, Millimeter and Submillimeter Detectors for Astronomy, (17 February 2003); https://doi.org/10.1117/12.459110

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