Abstract

We present measurements of the spatial response of infrared dipole and bow-tie lithographic antennas. Focused 10.6-µm radiation was scanned in two dimensions across the receiving area of each antenna. Deconvolution of the beam profile allowed the spatial response to be measured. The in-plane width of the antenna’s spatial response extends approximately one dielectric wavelength beyond the metallic structure. Determination of an antenna’s spatial response is important for several reasons. The power collected by the antenna can be calculated, if the collection area and the input irradiance (watts per square centimeter) are known. The actual power collected by the antenna is required for computation of responsivity and noise-equivalent power. In addition, the spatial response provides insight into the current-wave modes that propagate on an antenna and the nature of the fringe fields that exist in the adjacent dielectric.

© 1999 Optical Society of America

Deconvolution method for two-dimensional spatial-response mapping of lithographic infrared antennas

Javier Alda, Christophe Fumeaux, Iulian Codreanu, Jason A. Schaefer, and Glenn D. Boreman
Appl. Opt. 38(19) 3993-4000 (1999)

Lithographic antennas at visible frequencies

Christophe Fumeaux, Javier Alda, and Glenn D. Boreman
Opt. Lett. 24(22) 1629-1631 (1999)

Uncertainty analysis in the measurement of the spatial responsivity of infrared antennas

José Manuel López-Alonso, Brian Monacelli, Javier Alda, and Glenn Boreman
Appl. Opt. 44(21) 4557-4568 (2005)

Influence of dielectric substrate on the responsivity of microstrip dipole-antenna-coupled infrared microbolometers

Iulian Codreanu and Glenn D. Boreman
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Polarization response of asymmetric-spiral infrared antennas

C. Fumeaux, G. D. Boreman, W. Herrmann, H. Rothuizen, and F. K. Kneubühl
Appl. Opt. 36(25) 6485-6490 (1997)