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Surface Plasmon Excitation and Localization by Metal-Coated Axicon Prism
Division of Global Research Leaders, Shizuoka University, 3-5-1 Johoku, Naka, Hamamatsu 432-8561, Japan
CREST, Japan Science and Technology Agency, 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan
Faculty of Mechanical Engineering, Shizuoka University, 3-5-1 Johoku, Naka, Hamamatsu 432-8561, Japan
* Authors to whom correspondence should be addressed.
Received: 29 November 2011; in revised form: 1 February 2012 / Accepted: 1 February 2012 / Published: 8 February 2012
Abstract: Collimated Gaussian beams are efficiently localized at the apex of a metal-coated axicon prism by surface plasmon excitations. We observed the light scattered at the apex and the light reflected by the prism. Intense scattered light was observed with the radial polarization incidence. Further, each incidence of the radial, azimuthal, and linear polarizations provided field distributions of bright and dark intensities in the reflected images according to the surface plasmon excitation. We have demonstrated that surface plasmon waves are excited at the sides of the prism in the Kretschmann configuration and that they converge to its apex.
Keywords: surface plasmon polaritons; Kretschmann configuration; radial polarization; near-field optics; metallic thin film
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MDPI and ACS Style
Ono, A.; Sano, H.; Inami, W.; Kawata, Y. Surface Plasmon Excitation and Localization by Metal-Coated Axicon Prism. Micromachines 2012, 3, 55-61.
Ono A, Sano H, Inami W, Kawata Y. Surface Plasmon Excitation and Localization by Metal-Coated Axicon Prism. Micromachines. 2012; 3(1):55-61.
Ono, Atsushi; Sano, Hiroki; Inami, Wataru; Kawata, Yoshimasa. 2012. "Surface Plasmon Excitation and Localization by Metal-Coated Axicon Prism." Micromachines 3, no. 1: 55-61.