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Journal of the Optical Society of America A

Journal of the Optical Society of America A

| OPTICS, IMAGE SCIENCE, AND VISION

  • Editor: Franco Gori
  • Vol. 28, Iss. 8 — Aug. 1, 2011
  • pp: 1716–1720

Generation of nondiffracting quasi-circular polarization beams using an amplitude modulated phase hologram

G. H. Yuan, S. B. Wei, and X.-C. Yuan  »View Author Affiliations


JOSA A, Vol. 28, Issue 8, pp. 1716-1720 (2011)
http://dx.doi.org/10.1364/JOSAA.28.001716


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Abstract

We propose an approach to the generation of nondiffracting quasi-circularly polarized beams by a highly focusing azimuthally polarized beam using an amplitude modulated spiral phase hologram. Numerical verifications are implemented in the calculation of the electromagnetic fields and Poynting vector field near the focus based on the vector diffraction theory, and the polarization of the wavefront near the focal plane is analyzed in detail by calculating the Stokes polarization parameters. It is found that the electric field, magnetic field, and Poynting vector field can simultaneously be uniform and nondiverging over a relatively long axial range of 7.23 λ . In the transverse plane, the ellipticity and azimuthal angle of the local polarization ellipse varies from point to point. No polarization singularity and phase singularity are found at the beam center, which makes the bright spot possible.

© 2011 Optical Society of America

OCIS Codes
(050.1960) Diffraction and gratings : Diffraction theory
(140.3300) Lasers and laser optics : Laser beam shaping
(230.6120) Optical devices : Spatial light modulators
(260.5430) Physical optics : Polarization

ToC Category:
Physical Optics

History
Original Manuscript: May 4, 2011
Revised Manuscript: July 1, 2011
Manuscript Accepted: July 2, 2011
Published: July 27, 2011

Citation
G. H. Yuan, S. B. Wei, and X.-C. Yuan, "Generation of nondiffracting quasi-circular polarization beams using an amplitude modulated phase hologram," J. Opt. Soc. Am. A 28, 1716-1720 (2011)
http://www.opticsinfobase.org/josaa/abstract.cfm?URI=josaa-28-8-1716

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