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Opt Lett. 2012 Jul 15;37(14):2820-2. doi: 10.1364/OL.37.002820.

Generation of linear and nonlinear nonparaxial accelerating beams.

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1
NSF Nanoscale Science and Engineering Center, 3112 Etcheverry Hall, University of California, Berkeley, California 94720, USA.

Abstract

We study linear and nonlinear self-accelerating beams propagating along circular trajectories beyond the paraxial approximation. Such nonparaxial accelerating beams are exact solutions of the Helmholtz equation, preserving their shapes during propagation even under nonlinearity. We generate experimentally and observe directly these large-angle bending beams in colloidal suspensions of polystyrene nanoparticles.

PMID:
22825145
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