Large-Area Bolometers For Millimeter-Wave Power Calibration

Gabriel M. Rebeiz; Curtis C. Ling; David B. Rutledge

doi:10.1117/12.978372

18 November 1989 Large-Area Bolometers For Millimeter-Wave Power Calibration

Gabriel M. Rebeiz, Curtis C. Ling, David B. Rutledge

Proceedings Volume 1039, 13th Intl Conf on Infrared and Millimeter Waves; (1989) https://doi.org/10.1117/12.978372
Event: 13th International Conference on Infrared and Millimeter Waves, 1987, Honolulu, HI, United States

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.

Citation Download Citation

Gabriel M. Rebeiz, Curtis C. Ling, and David B. Rutledge "Large-Area Bolometers For Millimeter-Wave Power Calibration", Proc. SPIE 1039, 13th Intl Conf on Infrared and Millimeter Waves, (18 November 1989); https://doi.org/10.1117/12.978372

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