Evanescent Bessel beam generation via surface plasmon resonance excitation by a radially polarized beam
Optics Letters, Vol. 31, Issue 11, pp. 1726-1728 (2006)
http://dx.doi.org/10.1364/OL.31.001726
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Abstract
A simple setup for generating evanescent Bessel beams is proposed. When a radially polarized beam is strongly focused onto a dielectric–metal interface, the entire beam is p-polarized with respect to the dielectric–metal interface, enabling excitation of surface plasmons from all directions. The angular selectivity of surface plasmon excitation mimics the function of an axicon, leading to an evanescent nondiffracting Bessel beam. The created evanescent Bessel beam may be used as a virtual probe for near-field optical imaging and sensing applications.
© 2006 Optical Society of America
OCIS Codes
(050.1960) Diffraction and gratings : Diffraction theory
(170.5810) Medical optics and biotechnology : Scanning microscopy
(240.6680) Optics at surfaces : Surface plasmons
(260.5430) Physical optics : Polarization
ToC Category:
Physical Optics
History
Original Manuscript: February 22, 2006
Manuscript Accepted: March 16, 2006
Virtual Issues
Vol. 1, Iss. 7 Virtual Journal for Biomedical Optics
Citation
Qiwen Zhan, "Evanescent Bessel beam generation via surface plasmon resonance excitation by a radially polarized beam," Opt. Lett. 31, 1726-1728 (2006)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-31-11-1726
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