Polarization singularities of focused, radially polarized fields

The state of polarization of strongly focused, radially polarized electromagnetic fields is examined. It is found that several types of polarization singularities exist. Their relationship is investigated, and it is demonstrated that on smoothly varying a system parameter, such as the aperture angle...

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Bibliographic Details
Published in:Optics express 2006-06, Vol.14 (12), p.5733-5745
Main Authors: Schoonover, R W, Visser, T D
Format: Article
Language:English
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Summary:The state of polarization of strongly focused, radially polarized electromagnetic fields is examined. It is found that several types of polarization singularities exist. Their relationship is investigated, and it is demonstrated that on smoothly varying a system parameter, such as the aperture angle of the lens, different polarization singularities can annihilate each other. For example, the evolution of a lemon into a monstar and its subsequent annihilation with a star is studied. Also, the quite rare collision of a C-line and an L -line, resulting in a V-point, is observed.
ISSN:1094-4087
1094-4087
DOI:10.1364/OE.14.005733