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Optics Express

Optics Express

  • Editor: Michael Duncan
  • Vol. 13, Iss. 4 — Feb. 21, 2005
  • pp: 1066–1071

Focusing of pseudoradial polarized beams

I. J. Cooper, M. Roy, and C. J. R. Sheppard  »View Author Affiliations

Optics Express, Vol. 13, Issue 4, pp. 1066-1071 (2005)

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The focusing of a light beam with radial polarization has substantial advantages as the irradiance distribution in the focal plane is symmetric and there is maximum absorption at the focus. Using half wave plates cut into four quadrants with each quadrant having a linear polarization directed outwards gives a total field that approximates radial polarization, called pseudoradial polarization. The irradiance distributions in the focal region for different polarizations and beam profiles are compared. The irradiance is calculated by the numerical integration of the two-dimensional Rayleigh-Sommerfeld diffraction integral of the first kind using the 2DSC method for both circular and annular apertures.

© 2005 Optical Society of America

OCIS Codes
(050.1220) Diffraction and gratings : Apertures
(050.1960) Diffraction and gratings : Diffraction theory
(110.2990) Imaging systems : Image formation theory
(260.5430) Physical optics : Polarization

ToC Category:
Research Papers

Original Manuscript: December 7, 2004
Revised Manuscript: December 5, 2004
Published: February 21, 2005

I. Cooper, M. Roy, and C. J. Sheppard, "Focusing of pseudoradial polarized beams," Opt. Express 13, 1066-1071 (2005)

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  1. I. J. Cooper and C.J.R. Sheppard, “A matrix method for calculating the three-dimensional irradiance distribution in the focal region of a convergent beam,” Optik, 113, 298-304 (2003). [CrossRef]
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