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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. 30, Iss. 8 — Aug. 1, 2013
  • pp: 1603–1612

Metamaterial apertures for coherent computational imaging on the physical layer

Guy Lipworth, Alex Mrozack, John Hunt, Daniel L. Marks, Tom Driscoll, David Brady, and David R. Smith  »View Author Affiliations


JOSA A, Vol. 30, Issue 8, pp. 1603-1612 (2013)
http://dx.doi.org/10.1364/JOSAA.30.001603


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Abstract

We introduce the concept of a metamaterial aperture, in which an underlying reference mode interacts with a designed metamaterial surface to produce a series of complex field patterns. The resonant frequencies of the metamaterial elements are randomly distributed over a large bandwidth (18–26 GHz), such that the aperture produces a rapidly varying sequence of field patterns as a function of the input frequency. As the frequency of operation is scanned, different subsets of metamaterial elements become active, in turn varying the field patterns at the scene. Scene information can thus be indexed by frequency, with the overall effectiveness of the imaging scheme tied to the diversity of the generated field patterns. As the quality ( Q -) factor of the metamaterial resonators increases, the number of distinct field patterns that can be generated increases—improving scene estimation. In this work we provide the foundation for computational imaging with metamaterial apertures based on frequency diversity, and establish that for resonators with physically relevant Q -factors, there are potentially enough distinct measurements of a typical scene within a reasonable bandwidth to achieve diffraction-limited reconstructions of physical scenes.

© 2013 Optical Society of America

OCIS Codes
(100.3190) Image processing : Inverse problems
(110.1220) Imaging systems : Apertures
(110.2970) Imaging systems : Image detection systems
(110.1758) Imaging systems : Computational imaging
(160.3918) Materials : Metamaterials

ToC Category:
Imaging Systems

History
Original Manuscript: April 2, 2013
Manuscript Accepted: May 13, 2013
Published: July 19, 2013

Virtual Issues
August 9, 2013 Spotlight on Optics

Citation
Guy Lipworth, Alex Mrozack, John Hunt, Daniel L. Marks, Tom Driscoll, David Brady, and David R. Smith, "Metamaterial apertures for coherent computational imaging on the physical layer," J. Opt. Soc. Am. A 30, 1603-1612 (2013)
http://www.opticsinfobase.org/josaa/abstract.cfm?URI=josaa-30-8-1603


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