Optical vortices near sub-wavelength structures

In this paper the phase singularities of the electromagnetic field near a sub-wavelength slit are studied. These phase singularities, such as optical vortices, are found in regular patterns, which can be created or annihilated under the conservation of certain topological quantities, when a paramete...

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Published in:Journal of optics. B, Quantum and semiclassical optics Quantum and semiclassical optics, 2004-05, Vol.6 (5), p.S404-S409
Main Authors: Schouten, Hugo F, Visser, Taco D, Lenstra, Daan
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container_title Journal of optics. B, Quantum and semiclassical optics
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Visser, Taco D
Lenstra, Daan
description In this paper the phase singularities of the electromagnetic field near a sub-wavelength slit are studied. These phase singularities, such as optical vortices, are found in regular patterns, which can be created or annihilated under the conservation of certain topological quantities, when a parameter such as the slit width is changed. The connection between the phase singularities and the light transmission though the slit is considered.
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title Optical vortices near sub-wavelength structures
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