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Proceedings Paper

A Spectral Radiance Comparison Of A Noise Tube And A HgXe Arc Lamp Between 60GHz And 600GHz
Author(s): J. B. Heaney; K. P. Stewart; R. A. Boucarut; K. D. Moller; R. Zoeller; P. Zablocky
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Paper Abstract

The relative spectral radiance of a C. P. Clare & Co. noise tube, model TN-167, designed for the frequency range 90-140 GHz (3.3mm to 2.1mm) was compared to that from a Hanovia 200 watt high pressure HgXe arc lamp over the wavelength region from 0.5 to about 5mm. A Michelson Fourier transform spectrometer and a lamellar grating instrument were used in conjunction with liquid helium cooled bolometers of NEP 10-12 to 10-14 watt/(Hz)1/2 to measure relative spectral radiant power. With this instrumental arrangement, the noise tube exhibited a very sharp low frequency cutoff at about 2.2cm-1. The HgXe arc lamp emitted more radiant power than the noise tube in the wavelength region below 3mm (100GHz) down to 0.5mm. Above 3mm, the noise tube had a stronger output. The noise tube spectral radiance shifted to lower frequencies when the input current was lowered from 125mA to 50mA.

Paper Details

Date Published: 24 September 1987
PDF: 6 pages
Proc. SPIE 0791, Millimeter Wave Technology IV and RF Power Sources, (24 September 1987); doi: 10.1117/12.940813
Show Author Affiliations
J. B. Heaney, Goddard Space Flight Center (United States)
K. P. Stewart, Goddard Space Flight Center (United States)
R. A. Boucarut, Goddard Space Flight Center (United States)
K. D. Moller, Fairleigh Dickinson University (United States)
R. Zoeller, Fairleigh Dickinson University (United States)
P. Zablocky, Fairleigh Dickinson University (United States)

Published in SPIE Proceedings Vol. 0791:
Millimeter Wave Technology IV and RF Power Sources
James T. Coleman; James C. Wiltse, Editor(s)

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