Localized vibrational modes in optically bound structures

Details Localized vibrational modes in optically bound structures Localized vibrational modes in optically bound structures

2006-04-24

arxiv.org/abs/cond-mat/0604542v1

Opt. Lett. 31, 2583 (2006)

Physics

Condensed Matter

Other Condensed Matter

4 pages, Optical Binding

Scientific paper

10.1364/OL.31.002583

We show, through analytical theory and rigorous numerical calculations, that optical binding can organize a collection of particles into stable one-dimensional lattice. This lattice, as well as other optically-bound structures, are shown to exhibit spatially localized vibrational eigenmodes. The origin of localization here is distinct from the usual mechanisms such as disorder, defect, or nonlinearity, but is a consequence of the long-ranged nature of optical binding. For an array of particles trapped by an interference pattern, the stable configuration is often dictated by the external light source, but our calculation revealed that inter-particle optical binding forces can have a profound influence on the dynamics.

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