Title

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

Authors

Authors

J. M. Lopez-Alonso; B. Monacelli; J. Alda;G. Boreman

Comments

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Abbreviated Journal Title

Appl. Optics

Keywords

MICROBOLOMETERS; Optics

Abstract

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. (c) 2005 Optical Society of America.

Journal Title

Applied Optics

Volume

44

Issue/Number

21

Publication Date

1-1-2005

Document Type

Article

Language

English

First Page

4557

Last Page

4568

WOS Identifier

WOS:000230665200018

ISSN

1559-128X

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