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Optics Express

Optics Express

  • Editor: Martijn de Sterke
  • Vol. 16, Iss. 20 — Sep. 29, 2008
  • pp: 15694–15699

Generation of radially polarized beam with a segmented spiral varying retarder

W. J. Lai, B. C. Lim, P. B. Phua, K. S. Tiaw, H. H. Teo, and M. H. Hong  »View Author Affiliations


Optics Express, Vol. 16, Issue 20, pp. 15694-15699 (2008)
http://dx.doi.org/10.1364/OE.16.015694


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Abstract

We convert a linearly polarized Gaussian beam into a radially polarized doughnut beam with an eight-segment spirally varying retarder (SVR) at wavelength of 808 nm. The SVR is designed based on the linear birefringence of α-barium borate (α-BBO) crystal and fabricated using a dry etching process. Radially polarized light of high purity (>96% at far-field distribution) was generated experimentally using the segmented SVR positioned between two quarter waveplates with orthogonal slow axes. The emergent polarization can be switched between radially and azimuthally polarized cylindrical vector beams with a pair of half-wave plates.

© 2008 Optical Society of America

OCIS Codes
(220.0220) Optical design and fabrication : Optical design and fabrication
(230.5440) Optical devices : Polarization-selective devices
(260.5430) Physical optics : Polarization
(350.5030) Other areas of optics : Phase
(130.5440) Integrated optics : Polarization-selective devices

ToC Category:
Physical Optics

History
Original Manuscript: July 7, 2008
Revised Manuscript: September 15, 2008
Manuscript Accepted: September 16, 2008
Published: September 19, 2008

Citation
W. J. Lai, B. C. Lim, P. B. Phua, K. S. Tiaw, H. H. Teo, and M. H. Hong, "Generation of radially polarized beam with a segmented spiral varying retarder," Opt. Express 16, 15694-15699 (2008)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-16-20-15694


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