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Journal of the Optical Society of America A

Journal of the Optical Society of America A

| OPTICS, IMAGE SCIENCE, AND VISION

  • Editor: Stephen A. Burns
  • Vol. 26, Iss. 6 — Jun. 1, 2009
  • pp: 1382–1392

Optical theory of partially coherent thin-film energy-absorbing structures for power detectors and imaging arrays

Stafford Withington and Christopher N. Thomas  »View Author Affiliations


JOSA A, Vol. 26, Issue 6, pp. 1382-1392 (2009)
http://dx.doi.org/10.1364/JOSAA.26.001382


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Abstract

Free-space power detectors often have energy absorbing structures comprising multilayer systems of patterned thin films. We show that for any system of interacting resistive films, the expectation value of the absorbed power is given by the contraction of two tensor fields: one describes the spatial state of coherence of the incoming radiation, the other the state of coherence to which the detector is sensitive. Equivalently, the natural modes of the optical field scatter power into the natural modes of the detector. We describe a procedure for determining the amplitude, phase, and polarization patterns of a detector’s optical modes and their relative responsivities. The procedure gives the state of coherence of the currents flowing in the system and leads to important conceptual insights into the way the pixels of an imaging array interact and extract information from an optical field.

© 2009 Optical Society of America

OCIS Codes
(030.0030) Coherence and statistical optics : Coherence and statistical optics
(040.0040) Detectors : Detectors
(110.0110) Imaging systems : Imaging systems
(230.0230) Optical devices : Optical devices
(310.0310) Thin films : Thin films

ToC Category:
Coherence and Statistical Optics

History
Original Manuscript: January 29, 2009
Manuscript Accepted: April 8, 2009
Published: May 18, 2009

Citation
Stafford Withington and Christopher N. Thomas, "Optical theory of partially coherent thin-film energy-absorbing structures for power detectors and imaging arrays," J. Opt. Soc. Am. A 26, 1382-1392 (2009)
http://www.opticsinfobase.org/josaa/abstract.cfm?URI=josaa-26-6-1382

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