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Optics Express

Optics Express

  • Editor: Michael Duncan
  • Vol. 14, Iss. 7 — Apr. 3, 2006
  • pp: 3030–3038

The structure of focused, radially polarized fields

D. W. Diehl, R. W. Schoonover, and T. D. Visser  »View Author Affiliations

Optics Express, Vol. 14, Issue 7, pp. 3030-3038 (2006)

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We present a detailed analysis of the structure of strongly focused, radially polarized electromagnetic fields. The existence of phase singularities of the two components of the electric field is demonstrated. Two different mechanisms to obtain creation or annihilation of these phase singularities are discussed. These are changing the aperture angle of the lens and the width of the beam. Also, it is shown that in the focal plane the handedness of the electric polarization ellipse is an alternating function of the radial distance. Finally, the different contributions to the electric energy density are examined.

© 2006 Optical Society of America

OCIS Codes
(050.1960) Diffraction and gratings : Diffraction theory
(140.3300) Lasers and laser optics : Laser beam shaping
(260.2110) Physical optics : Electromagnetic optics
(260.5430) Physical optics : Polarization

ToC Category:
Physical Optics

Original Manuscript: January 20, 2006
Revised Manuscript: March 16, 2006
Manuscript Accepted: March 17, 2006
Published: April 3, 2006

D. W. Diehl, R. W. Schoonover, and T. D. Visser, "The structure of focused, radially polarized fields," Opt. Express 14, 3030-3038 (2006)

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  1. K.S. Youngworth and T.G. Brown, "Inhomogeneous polarization in scanning optical microscopy," Proceedings of SPIE 3919, 75-85 (2000). [CrossRef]
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