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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: Stephen A. Burns
  • Vol. 23, Iss. 2 — Feb. 1, 2006
  • pp: 476–482

Geometric phase lens

Filippus S. Roux  »View Author Affiliations


JOSA A, Vol. 23, Issue 2, pp. 476-482 (2006)
http://dx.doi.org/10.1364/JOSAA.23.000476


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Abstract

The design of a lens that modulates the geometric phase of an optical beam by manipulating its polarization is presented. To produce such a geometric phase element with a spatially varying phase function, one needs a wave plate with varying orientation. One can use subwavelength grooves to produce form birefringence, but the variation in orientation generally leads to branch points in the groove pattern. These branch points do not affect the phase of the traversing beam directly because the grooves are subwavelength. However, they do produce errors in the groove orientation, which indirectly leads to errors in the geometric phase function that is implemented. A design procedure is provided to compute the groove pattern for such a rotationally symmetric geometric phase element; and, with the aid of a numerical simulation, the effect of the branch points in the groove pattern on its performance is investigated.

© 2006 Optical Society of America

OCIS Codes
(050.2770) Diffraction and gratings : Gratings
(220.3620) Optical design and fabrication : Lens system design
(260.1440) Physical optics : Birefringence
(260.5430) Physical optics : Polarization
(350.1370) Other areas of optics : Berry's phase

ToC Category:
Physical Optics

History
Original Manuscript: April 28, 2005
Revised Manuscript: June 24, 2005
Manuscript Accepted: July 13, 2005

Citation
Filippus S. Roux, "Geometric phase lens," J. Opt. Soc. Am. A 23, 476-482 (2006)
http://www.opticsinfobase.org/josaa/abstract.cfm?URI=josaa-23-2-476

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