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Proceedings Paper

Large-Area Bolometers For Millimeter-Wave Power Calibration
Author(s): Gabriel M. Rebeiz; Curtis C. Ling; David B. Rutledge
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Paper Abstract

An accurate monolithic power meter has been developed for millimeter-wave applications. The detector is a large-area Bismuth bolometer, integrated on a fused-Quartz substrate. It simply measures the temperature change caused by the absorption of millimeter-wave radiation. The power meter is easy to fabricate, and can be calibrated using a low-frequency network. The measured responsivity for a 1x1cm bolometer is about 1mV/W, at a bias of 1V. and a video modulation of 100Hz. The noise spectrum exhibits a 1/f rolloff below 1KHz, and is limited by the Johnson noise for higher frequencies. The NEP of the detector is 3x10-6W H z -1/2 at a video modulation of 1 KHz. It is possible to decrease the current NEP by fabricating bolometers with higher responsivities. Possible application areas are absolute power calibration and localized power-density measurements for millimeter and submillimeter wavelengths.

Paper Details

Date Published: 18 November 1989
PDF: 2 pages
Proc. SPIE 1039, 13th Intl Conf on Infrared and Millimeter Waves, (18 November 1989); doi: 10.1117/12.978372
Show Author Affiliations
Gabriel M. Rebeiz, The University of Michigan (United States)
Curtis C. Ling, The University of Michigan (United States)
David B. Rutledge, California Institute of Technology (United States)

Published in SPIE Proceedings Vol. 1039:
13th Intl Conf on Infrared and Millimeter Waves
Richard J. Temkin, Editor(s)

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