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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Anthony J. Campillo
  • Vol. 32, Iss. 13 — Jul. 1, 2007
  • pp: 1830–1832

Observation of superluminal wave-front propagation at the shadow area behind an opaque disk

M. Vasnetsov, V. Pas’ko, A. Khoroshun, V. Slyusar, and M. Soskin  »View Author Affiliations


Optics Letters, Vol. 32, Issue 13, pp. 1830-1832 (2007)
http://dx.doi.org/10.1364/OL.32.001830


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Abstract

We demonstrate in theory and experiment superluminal properties of optical field propagation in the shadow area behind an opaque disk (Poisson’s spot). The wave front of the field in the shadow zone is initially delayed with respect to the unperturbed field. This phase shift gradually diminishes along the optical path and therefore ensures variation of the phase velocity of the field at the axis. A resulting excess of about c × 10 5 was detected.

© 2007 Optical Society of America

OCIS Codes
(000.2700) General : General science
(050.5080) Diffraction and gratings : Phase shift

ToC Category:
Diffraction and Gratings

History
Original Manuscript: April 2, 2007
Revised Manuscript: April 24, 2007
Manuscript Accepted: April 24, 2007
Published: June 20, 2007

Citation
M. Vasnetsov, V. Pas'ko, A. Khoroshun, V. Slyusar, and M. Soskin, "Observation of superluminal wave-front propagation at the shadow area behind an opaque disk," Opt. Lett. 32, 1830-1832 (2007)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-32-13-1830

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