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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 18, Iss. 22 — Oct. 25, 2010
  • pp: 22734–22746

Measurements of the negative refractive index of sub-diffraction waves propagating in an indefinite permittivity medium

Dmitriy Korobkin, Burton Neuner, III, Chris Fietz, Nikoletta Jegenyes, Gabriel Ferro, and Gennady Shvets  »View Author Affiliations

Optics Express, Vol. 18, Issue 22, pp. 22734-22746 (2010)

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An indefinite permittivity medium (IPM) has been fabricated and optically characterized in mid-infrared spectral range (10.7 µm−11.3 µm). Phase and amplitude transmission measurements reveal two remarkable properties of IPMs: (i) transmission of sub-diffraction waves (as short as λ/4) can exceed those of diffraction-limited ones, and (ii) sub-diffraction waves can propagate with negative refractive index. We describe a novel double-detector optical technique relying on the interference between sub-diffraction and diffraction-limited waves for accurate measurement of the transmission amplitude and phase of the former.

© 2010 OSA

OCIS Codes
(120.3180) Instrumentation, measurement, and metrology : Interferometry
(120.5050) Instrumentation, measurement, and metrology : Phase measurement
(160.3918) Materials : Metamaterials
(050.6624) Diffraction and gratings : Subwavelength structures
(070.7345) Fourier optics and signal processing : Wave propagation

ToC Category:

Original Manuscript: August 12, 2010
Revised Manuscript: October 5, 2010
Manuscript Accepted: October 5, 2010
Published: October 12, 2010

Dmitriy Korobkin, Burton Neuner III, Chris Fietz, Nikoletta Jegenyes, Gabriel Ferro, and Gennady Shvets, "Measurements of the negative refractive index of sub-diffraction waves propagating in an indefinite permittivity medium," Opt. Express 18, 22734-22746 (2010)

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