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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: Joseph N. Mait
  • Vol. 51, Iss. 28 — Oct. 1, 2012
  • pp: 6799–6804

Generation of dipole vortex array using spiral Dammann zone plates

Junjie Yu, Changhe Zhou, Wei Jia, Anduo Hu, Wugang Cao, Jun Wu, and Shaoqing Wang  »View Author Affiliations


Applied Optics, Vol. 51, Issue 28, pp. 6799-6804 (2012)
http://dx.doi.org/10.1364/AO.51.006799


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Abstract

We propose a new diffractive optical element, called a spiral Dammann zone plate (SDZP), to generate a series of dipole vortices along the optical axis in the focal region of a focusing objective. By combining this SDZP and another Dammann grating, we describe the generation of three-dimensional dipole vortex arrays in the focal volume of an objective. For experimental demonstration, a 1×5 SDZP with base charge of l=1 is fabricated by using lithography and wet-etching techniques, and a 1×5 coaxial dipole vortex array is achieved for an objective of NA=0.127. Furthermore, by combining the 1×5 SDZP and another 5×5 Dammann grating, a 5×5×5 dipole vortex array is also experimentally demonstrated. The results show that topological charges of these 5×5 vortex arrays on five coaxial planes could be tunable by selecting a vortex beam carrying different charge as the incident field.

© 2012 Optical Society of America

OCIS Codes
(050.1950) Diffraction and gratings : Diffraction gratings
(140.7010) Lasers and laser optics : Laser trapping
(230.1950) Optical devices : Diffraction gratings
(050.4865) Diffraction and gratings : Optical vortices

ToC Category:
Diffraction and Gratings

History
Original Manuscript: June 15, 2012
Revised Manuscript: August 30, 2012
Manuscript Accepted: August 30, 2012
Published: September 26, 2012

Citation
Junjie Yu, Changhe Zhou, Wei Jia, Anduo Hu, Wugang Cao, Jun Wu, and Shaoqing Wang, "Generation of dipole vortex array using spiral Dammann zone plates," Appl. Opt. 51, 6799-6804 (2012)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-51-28-6799

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