On focused fields with maximum electric field components and images of electric dipoles | Zendy

R. de Bruin | Zendy; H. P. Urbach | Zendy; Silvania F. Pereira | Zendy

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On focused fields with maximum electric field components and images of electric dipoles

Author(s) -

R. de Bruin,

H. P. Urbach,

Silvania F. Pereira

Publication year - 2011

Publication title -

optics express

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/oe.19.009157

Subject(s) - electric field , optics , dipole , physics , amplitude , aperture (computer memory) , optical field , field (mathematics) , electric dipole transition , electric dipole moment , optical axis , numerical aperture , magnetic dipole , mathematics , lens (geology) , quantum mechanics , wavelength , acoustics , pure mathematics

We study focused fields which, for a given total power and a given numerical aperture, have maximum electric field amplitude in some direction in the focal point and are linearly polarized along this direction. It is shown that the optimum field is identical to the image of an electric dipole with unit magnification. In particular, the field which is the image of an electric dipole whose dipole vector is parallel to the optical axis, is identical to the field whose longitudinal component is maximum at the image point.

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