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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: James C. Wyant
  • Vol. 45, Iss. 6 — Feb. 20, 2006
  • pp: 1153–1161

High-power efficient multiple optical vortices in a single beam generated by a kinoform-type spiral phase plate

K. J. Moh, X.-C. Yuan, W. C. Cheong, L. S. Zhang, J. Lin, B. P. S. Ahluwalia, and H. Wang  »View Author Affiliations


Applied Optics, Vol. 45, Issue 6, pp. 1153-1161 (2006)
http://dx.doi.org/10.1364/AO.45.001153


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Abstract

We propose using a solitary kinoform-type spiral phase plate structure to generate an array of vortices located in a single beam. Kinoform-type spiral surfaces allow each wavelength component of the phase modulation value to be wrapped back to its 2pi equivalent for optical vortices of high charge. This allows the surface-relief profiles of high-charge vortices to be microfabricated with the same physical height as spiral phase plates of unity-charged optical vortices. The m-charged optical vortex obtained interacts with the inherent coherent background, which changes the propagation dynamics of the optical vortex and splits the initial m charge into |m| unity-charged optical vortices within the same beam. Compared to a hologram, a multistart spiral phase plate is more efficient in the use of available spatial frequencies and beam energy and also is computationally less demanding. Furthermore, using microfabrication techniques will allow for greater achievable tolerances in terms of smaller feature sizes.

© 2006 Optical Society of America

OCIS Codes
(050.1970) Diffraction and gratings : Diffractive optics
(100.5090) Image processing : Phase-only filters
(220.4000) Optical design and fabrication : Microstructure fabrication
(350.3950) Other areas of optics : Micro-optics

ToC Category:
Optical Design and Fabrication

History
Original Manuscript: April 28, 2005
Revised Manuscript: September 3, 2005
Manuscript Accepted: September 11, 2005

Citation
K. J. Moh, X.-C. Yuan, W. C. Cheong, L. S. Zhang, J. Lin, B. P. S. Ahluwalia, and H. Wang, "High-power efficient multiple optical vortices in a single beam generated by a kinoform-type spiral phase plate," Appl. Opt. 45, 1153-1161 (2006)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-45-6-1153

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