Send to

Choose Destination
See comment in PubMed Commons below
Opt Lett. 2009 Mar 15;34(6):722-4.

Realization of an evanescent Bessel beam via surface plasmon interference excited by a radially polarized beam.

Author information

Electro-Optics Graduate Program, University of Dayton, Dayton, OH 45469-0245, USA.


We report the experimental confirmation of the evanescent Bessel beam generation via surface plamson resonance excitation with a radially polarized beam. The interference of surface plasmon waves excited by a radially polarized beam creates an evanescent Bessel beam with enhanced localized field and spot size beyond the diffraction limit. The excitation of the surface plasmon is confirmed by the observation of a narrow dark ring at the back focal plane. Two-dimensional intensity distributions at different distances from the sample surface are mapped by a collection-mode near-field scanning optical microscope to verify the nondiffracting and decaying natures of the evanescent Bessel beam.

PubMed Commons home

PubMed Commons


    Supplemental Content

    Full text links

    Icon for Optical Society of America
    Loading ...
    Support Center