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Applied Physics Letters / Volume 100 / Issue 1 / NANOSCALE SCIENCE AND TECHNOLOGY

Appl. Phys. Lett. 100, 013101 (2012); http://dx.doi.org/10.1063/1.3673334 (3 pages)

Ultra-thin plasmonic optical vortex plate based on phase discontinuities

Patrice Genevet1,2, Nanfang Yu1, Francesco Aieta1,3, Jiao Lin1,4, Mikhail A. Kats1, Romain Blanchard1, Marlan O. Scully2, Zeno Gaburro1,5, and Federico Capasso1

1School of Engineering and Applied Sciences, Harvard University, Cambridge, Massachusetts 02138, USA
2Institute for Quantum Studies and Department of Physics, Texas A&M University, College Station, Texas 77843, USA
3Dipartimento di Fisica e Ingegneria dei Materiali e del Territorio, Università Politecnica delle Marche, 60131 Ancona, Italy
4Singapore Institute of Manufacturing Technology, Singapore 638075, Singapore
5Dipartimento di Fisica, Università degli Studi di Trento, 14, 38100 Trento, Italy

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(Received 19 October 2011; accepted 9 November 2011; published online 3 January 2012)

A flat optical device that generates optical vortices with a variety of topological charges is demonstrated. This device spatially modulates light beams over a distance much smaller than the wavelength in the direction of propagation by means of an array of V-shaped plasmonic antennas with sub-wavelength separation. Optical vortices are shown to develop after a sub-wavelength propagation distance from the array, a feature that has major potential implications for integrated optics.

© 2012 American Institute of Physics

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KEYWORDS and PACS

Keywords

antennas, light propagation, optical arrays, optical vortices, plasmonics, spatial light modulators

PACS

  • 42.79.Hp

    Optical processors, correlators, and modulators

  • 84.40.Ba

    Antennas: theory, components and accessories

ARTICLE DATA

Digital Object Identifier
http://dx.doi.org/10.1063/1.3673334

PUBLICATION DATA

ISSN

0003-6951 (print)  
1077-3118 (online)

Publisher

$abstract.society.value is a Member of CrossRef American Institute of Physics

For access to fully linked references, you need to log in.
    M. Padgett, J. Courtial, and L. Allen, Phys. Today 57(5), 35 (2004)PHTOAD000057000005000035000001.

    J. Leach, M. J. Padgett, S. M. Barnett, S. Franke-Arnold, and J. Courtial, Phys. Rev. Lett. 88, 257901 (2002).


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