The spatial impulse response of antenna-coupled infrared detectors with dimensions comparable with the wavelength is obtained from a two-dimensional scan of a tightly focused CO<sub>2</sub>-laser beam. The method uses an experimental setup with submicrometer resolution and an iterative deconvolution algorithm. The measured spatial response is compared with numerically computed near-field distributions of a dipole antenna, with good agreement.
© 1999 Optical Society of America
(040.0040) Detectors : Detectors
(040.3060) Detectors : Infrared
(040.5570) Detectors : Quantum detectors
(100.1830) Image processing : Deconvolution
(230.5440) Optical devices : Polarization-selective devices
Javier Alda, Christophe Fumeaux, Iulian Codreanu, Jason A. Schaefer, and Glenn D. Boreman, "Deconvolution Method for Two-Dimensional Spatial-Response Mapping of Lithographic Infrared Antennas," Appl. Opt. 38, 3993-4000 (1999)