Abstract
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.
Original language | English |
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Pages (from-to) | S404-S409 |
Journal | Journal of Optics B: Quantum and Semiclassical Optics |
Volume | 6 |
Issue number | 5 |
DOIs | |
Publication status | Published - 2004 |