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Proceedings Paper

On the definition of beam width of highly-focused radially-polarized light fields
Author(s): R. Martínez-Herrero; P. M. Mejías; A. Manjavacas
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Paper Abstract

Analytical definitions are proposed for the width of both the transverse and the longitudinal component of a nonparaxial radially-polarized light field at the focal plane of a highly focusing system. By means of an illustrative example, it is also shown that the irradiance is significant within a circle whose radius is given by the proposed beam width. Moreover, the power contained within such circular region around the focal point is shown to concentrate the main part of the total power.

Paper Details

Date Published: 11 May 2010
PDF: 9 pages
Proc. SPIE 7712, Nanophotonics III, 77122K (11 May 2010); doi: 10.1117/12.854213
Show Author Affiliations
R. Martínez-Herrero, Univ. Complutense de Madrid (Spain)
P. M. Mejías, Univ. Complutense de Madrid (Spain)
A. Manjavacas, Instituto de Óptica, CSIC (Spain)


Published in SPIE Proceedings Vol. 7712:
Nanophotonics III
David L. Andrews; Jean-Michel Nunzi; Andreas Ostendorf, Editor(s)

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