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Demonstration of images with negative group velocities |
Optics Express, Vol. 20, Issue 13, pp. 13702-13710 (2012)
http://dx.doi.org/10.1364/OE.20.013702
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Abstract
We report the experimental demonstration of the superluminal propagation of multi-spatial-mode images via four-wave mixing in hot atomic vapor, in which all spatial sub-regions propagate with negative group velocities. We investigate the spatial mode properties and temporal reshaping of the fast light images, and show large relative pulse peak advancements of up to 64 % of the input pulse width. The degree of temporal reshaping is quantified and increases as the relative pulse peak advancement increases. When optimized for image quality or pulse advancement, negative group velocities of up to
© 2012 OSA
OCIS Codes
(190.0190) Nonlinear optics : Nonlinear optics
(190.4350) Nonlinear optics : Nonlinear optics at surfaces
(190.4380) Nonlinear optics : Nonlinear optics, four-wave mixing
(190.5530) Nonlinear optics : Pulse propagation and temporal solitons
(350.5500) Other areas of optics : Propagation
ToC Category:
Nonlinear Optics
History
Original Manuscript: April 12, 2012
Revised Manuscript: May 25, 2012
Manuscript Accepted: May 26, 2012
Published: June 4, 2012
Citation
Ryan T. Glasser, Ulrich Vogl, and Paul D. Lett, "Demonstration of images with negative group velocities," Opt. Express 20, 13702-13710 (2012)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-20-13-13702
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