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Proceedings Paper

Finline-integrated cold electron bolometer
Author(s): Ernst Otto; Mikhail Tarasov; Paul K. Grimes; Natalia S. Kaurova; Hannes Kuusisto; Leonid S. Kuzmin; Ghassan Yassin
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Paper Abstract

The Cold-Electron Bolometer (CEB) is a sensitive millimetre-wave detector which is easy to integrate with superconducting planar circuits. CEB detectors have other important features such as high saturation power and very fast response. We have fabricated and tested CEB detectors integrated across the slot of a unilateral finline on a silicon substrate. Bolometers were fabricated using two fabrication methods: e-beam direct-write trilayer technology and an advanced shadow mask evaporation technique. The CEB performance was tested in a He3 sorption cryostat at a bath temperature of 280mK. DC I-V curves and temperature responses were measured in a current bias mode, and preliminary measurements of the optical response were made using an IMPATT diode operating at 110GHz. These tests were conducted by coupling power directly into the finline chip, without the use of waveguide or feedhorns. For the devices fabricated in standard direct-write technology, the bolometer dark electrical noise equivalent power is estimated to be about 5×10-16W/√Hz, while the dark NEP value for the shadow mask evaporation technique devices is estimated to be as low as 3×10-17W/√Hz.

Paper Details

Date Published: 15 July 2010
PDF: 8 pages
Proc. SPIE 7741, Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy V, 77411A (15 July 2010); doi: 10.1117/12.858263
Show Author Affiliations
Ernst Otto, Oxford Univ. (United Kingdom)
Mikhail Tarasov, Chalmers Univ. of Technology (Sweden)
Kotel'nikov Institute of Radio Engineering and Electronics (Russian Federation)
Paul K. Grimes, Oxford Univ. (United Kingdom)
Natalia S. Kaurova, Chalmers Univ. of Technology (Sweden)
Moscow State Pedagogical Univ. (Russian Federation)
Hannes Kuusisto, Chalmers Univ. of Technology (Sweden)
Leonid S. Kuzmin, Chalmers Univ. of Technology (Sweden)
Ghassan Yassin, Oxford Univ. (United Kingdom)

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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