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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: Franco Gori
  • Vol. 27, Iss. 5 — May. 1, 2010
  • pp: 1219–1231

Modeling the intensity and polarization response of planar bolometric detectors

Christopher N. Thomas, Stafford Withington, David T. Chuss, Edward J. Wollack, and S. Harvey Moseley  »View Author Affiliations


JOSA A, Vol. 27, Issue 5, pp. 1219-1231 (2010)
http://dx.doi.org/10.1364/JOSAA.27.001219


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Abstract

Far-infrared bolometric detectors are used extensively in ground-based and space-borne astronomy, and thus it is important to understand their optical behavior precisely. We have studied the intensity and polarization response of free-space bolometers and shown that when the size of the absorber is reduced below a wavelength, the response changes from being that of a classical optical detector to that of a few-mode antenna. We have calculated the modal content of the reception patterns and found that for any volumetric detector having a side length of less than a wavelength, three magnetic and three electric dipoles characterize the behavior. The size of the absorber merely determines the relative strengths of the contributions. The same formalism can be applied to thin-film absorbers, where the induced current is forced to flow in a plane. In this case, one magnetic and two electric dipoles characterize the behavior. The ability to model easily the intensity, polarization, and straylight characteristics of electrically small detectors will be of great value when designing high-performance polarimetric imaging arrays.

© 2010 Optical Society of America

OCIS Codes
(030.4070) Coherence and statistical optics : Modes
(110.4980) Imaging systems : Partial coherence in imaging
(120.4570) Instrumentation, measurement, and metrology : Optical design of instruments
(040.2235) Detectors : Far infrared or terahertz

ToC Category:
Detectors

History
Original Manuscript: October 6, 2009
Revised Manuscript: March 12, 2010
Manuscript Accepted: March 15, 2010
Published: April 30, 2010

Citation
Christopher N. Thomas, Stafford Withington, David T. Chuss, Edward J. Wollack, and S. Harvey Moseley, "Modeling the intensity and polarization response of planar bolometric detectors," J. Opt. Soc. Am. A 27, 1219-1231 (2010)
http://www.opticsinfobase.org/josaa/abstract.cfm?URI=josaa-27-5-1219

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