Title :
Near field vector beam measurements at 1 THz
Author :
Tong, C. Y Edward ; Meledin, Denis V. ; Marrone, Dan P. ; Paine, Scott N. ; Gibson, Hugh ; Blundell, Raymond
Author_Institution :
Harvard-Smithsonian Center for Astrophys., Cambridge, MA, USA
fDate :
6/1/2003 12:00:00 AM
Abstract :
We have performed near-field vector beam measurements at 1.03 THz to characterize and align the receiver optics of a superconducting receiver. The signal source is a harmonic generator mounted on an X-Y translation stage. We model the measured two-dimensional complex beam pattern by a fundamental Gaussian mode, from which we derive the position of the beam center, the beam radius and the direction of propagation. By performing scans in the planes separated by 400 mm, we have confirmed that our beam pattern measurements are highly reliable.
Keywords :
submillimetre wave measurement; submillimetre wave receivers; superconducting microwave devices; 1 THz; fundamental Gaussian mode; harmonic generator; near-field vector beam measurement; submillimeter wave measurement; superconducting receiver optics; two-dimensional beam pattern; Antenna measurements; Extraterrestrial measurements; Frequency; Optical harmonic generation; Optical interferometry; Optical receivers; Optical transmitters; Optical waveguides; Submillimeter wave measurements; Wavelength measurement;
Journal_Title :
Microwave and Wireless Components Letters, IEEE
DOI :
10.1109/LMWC.2003.814602
