Ultra-thin plasmonic optical vortex plate based on phase discontinuities


Patrice Genevet, Nanfang Yu, Francesco Aieta, Jiao Lin, Mikhail A. Kats, Romain Blanchard, Marlan O. Scully, Zeno Gaburro, and Federico Capasso. 2012. “Ultra-thin plasmonic optical vortex plate based on phase discontinuities.” APPLIED PHYSICS LETTERS, 100, 1.
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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. (C) 2012 American Institute of Physics. [doi: 10.1063/1.3673334]
Last updated on 06/02/2020