PT Journal
AU Tong, CE
   Meledin, DV
   Marrone, DP
   Paine, SN
   Gibson, H
   Blundell, R
TI Near field vector beam measurements at 1 THz
SO IEEE Microw. Compon. Lett.
PY 2003
BP 235
EP 237
VL 13
IS 6
DI 10.1109/LMWC.2003.814602
DE HEB; mixer; waveguide; LO power; local oscillator power; saturation effect; dynamic range
AB 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.
ER