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Optics Letters

Optics Letters


  • Editor: Alan E. Willner
  • Vol. 37, Iss. 7 — Apr. 1, 2012
  • pp: 1142–1144

Digital holographic microscopy characterization of superdirective beam by metamaterial

Giuseppe Di Caprio, Principia Dardano, Giuseppe Coppola, Stefano Cabrini, and Vito Mocella  »View Author Affiliations

Optics Letters, Vol. 37, Issue 7, pp. 1142-1144 (2012)

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Digital holographic microscopy (DHM) has been successfully applied for the first time to characterize the radiative out-of-plane emission properties of a superdirective device. Complementarily to near-field microscopy, DHM allows us to reconstruct the beam in the far-field region. The angular dispersion of the light beam radiated from a grating composed of air and anti-air metamaterial has been determined, and the proposed technique has highlighted a collimation degree higher than 0.04°, as already evaluated in a previous work. Further considerations on the retrieved phase map of the beam in the acquisition plane are presented.

© 2012 Optical Society of America

OCIS Codes
(100.2000) Image processing : Digital image processing
(100.5070) Image processing : Phase retrieval
(090.1995) Holography : Digital holography
(160.3918) Materials : Metamaterials
(160.5298) Materials : Photonic crystals

ToC Category:

Original Manuscript: October 17, 2011
Revised Manuscript: January 24, 2012
Manuscript Accepted: January 26, 2012
Published: March 21, 2012

Giuseppe Di Caprio, Principia Dardano, Giuseppe Coppola, Stefano Cabrini, and Vito Mocella, "Digital holographic microscopy characterization of superdirective beam by metamaterial," Opt. Lett. 37, 1142-1144 (2012)

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