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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 19, Iss. 3 — Jan. 31, 2011
  • pp: 2537–2545

Terahertz near-field microscopy of complementary planar metamaterials: Babinet’s principle

Andreas Bitzer, Alex Ortner, Hannes Merbold, Thomas Feurer, and Markus Walther  »View Author Affiliations


Optics Express, Vol. 19, Issue 3, pp. 2537-2545 (2011)
http://dx.doi.org/10.1364/OE.19.002537


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Abstract

Using terahertz near-field imaging we experimentally investigate the resonant electromagnetic field distributions behind a split-ring resonator and its complementary structure with sub-wavelength spatial resolution. For the out-of-plane components we experimentally verify complementarity of electric and magnetic fields as predicted by Babinet’s principle. This duality of near-fields can be used to indirectly map resonant magnetic fields close to metallic microstructures by measuring the electric fields close to their complementary analogues which is particularly useful since magnetic near-fields are still extremely difficult to access in the THz regime. We find excellent agreement between the results from theory, simulation and two different experimental near-field techniques.

© 2011 Optical Society of America

OCIS Codes
(240.6680) Optics at surfaces : Surface plasmons
(160.3918) Materials : Metamaterials
(180.4243) Microscopy : Near-field microscopy
(300.6495) Spectroscopy : Spectroscopy, teraherz

ToC Category:
Microscopy

History
Original Manuscript: November 16, 2010
Revised Manuscript: December 17, 2010
Manuscript Accepted: December 20, 2010
Published: January 26, 2011

Virtual Issues
Vol. 6, Iss. 2 Virtual Journal for Biomedical Optics

Citation
Andreas Bitzer, Alex Ortner, Hannes Merbold, Thomas Feurer, and Markus Walther, "Terahertz near-field microscopy of complementary planar metamaterials: Babinet's principle," Opt. Express 19, 2537-2545 (2011)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-19-3-2537


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