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Localized mode hybridization by fine tuning of two-dimensional random media |
Optics Letters, Vol. 37, Issue 11, pp. 1946-1948 (2012)
http://dx.doi.org/10.1364/OL.37.001946
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Abstract
We study numerically the interaction of spatially localized modes in strongly scattering two-dimensional (2D) media. We move eigenvalues in the complex plane by changing gradually the index of a single scatterer. When spatial and spectral overlap is sufficient, localized states couple, and avoided level crossing is observed. We show that local manipulation of the disordered structure can couple several localized states to form an extended chain of hybridized modes crossing the entire sample, thus changing the nature of certain modes from localized to extended in a nominally localized disordered system. We suggest such a chain in 2D random systems is the analog of one-dimensional necklace states, the occasional open channels predicted by Pendry [Physics 1, 20 (2008).] through which the light can sneak through an opaque medium.
© 2012 Optical Society of America
OCIS Codes
(290.4210) Scattering : Multiple scattering
(260.2710) Physical optics : Inhomogeneous optical media
ToC Category:
Scattering
History
Original Manuscript: January 18, 2012
Revised Manuscript: February 17, 2012
Manuscript Accepted: March 2, 2012
Published: May 25, 2012
Citation
Laurent Labonté, Christian Vanneste, and Patrick Sebbah, "Localized mode hybridization by fine tuning of two-dimensional random media," Opt. Lett. 37, 1946-1948 (2012)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-37-11-1946
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