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Journal of Engineering
Volume 2013, Article ID 512971, 8 pages
http://dx.doi.org/10.1155/2013/512971
Research Article

Sharper Focal Spot for a Radially Polarized Beam Using Ring Aperture with Phase Jump

Image Processing Systems Institute of the Russian Academy of Sciences, Molodogvardeiskaya Street 151, Samara 443001, Russia

Received 28 November 2012; Revised 4 March 2013; Accepted 10 March 2013

Academic Editor: You-Rong Li

Copyright © 2013 Svetlana N. Khonina and Andrei V. Ustinov. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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