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Applied Optics

Applied Optics


  • Vol. 44, Iss. 21 — Jul. 20, 2005
  • pp: 4557–4568

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

José Manuel López-Alonso, Brian Monacelli, Javier Alda, and Glenn Boreman  »View Author Affiliations

Applied Optics, Vol. 44, Issue 21, pp. 4557-4568 (2005)

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The measurement of a two-dimensional spatial responsivity map of infrared antennas can be accomplished by use of an iterative deconvolution algorithm. The inputs of this algorithm are the spatial distribution of the laser beam irradiance illuminating the antenna-coupled detector and a map of the measured detector response as it moves through the illuminating beam. The beam irradiance distribution is obtained from knife-edge measurements of the beam waist region; this data set is fitted to a model of the beam. The uncertainties, errors, and artifacts of the measurement procedure are analyzed by principal-component analysis. This study has made it possible to refine the measurement protocol and to identify, classify, and filter undesirable sources of noise. The iterative deconvolution algorithm stops when a well-defined threshold is reached. Spatial maps of mean values and uncertainties have been obtained for the beam irradiance distribution, the scanned spatial response data, and the resultant spatial responsivity of the infrared antenna. Signal-to-noise ratios have been defined and compared, and the beam irradiance distribution characterization has been identified as the statistically weakest part of the measurement procedure.

© 2005 Optical Society of America

OCIS Codes
(040.3060) Detectors : Infrared
(120.4800) Instrumentation, measurement, and metrology : Optical standards and testing
(230.0250) Optical devices : Optoelectronics

Original Manuscript: November 15, 2004
Revised Manuscript: February 16, 2005
Manuscript Accepted: February 20, 2005
Published: July 20, 2005

José Manuel López-Alonso, Brian Monacelli, Javier Alda, and Glenn Boreman, "Uncertainty analysis in the measurement of the spatial responsivity of infrared antennas," Appl. Opt. 44, 4557-4568 (2005)

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