Waveguide properties of single subwavelength holes demonstrated with radially and azimuthally polarized light |
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| Authors: | J?Kindler P?Banzer S?Quabis U?Peschel G?Leuchs |
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| Institution: | (1) Max Planck Research Group of Optics, Information and Photonics, Günther-Scharowsky-Str. 1/Bau 24, 91058 Erlangen, Germany |
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| Abstract: | We investigate the transmission of focused beams through single subwavelength holes in a silver film. We use radially and
azimuthally polarized light to excite higher-order waveguide modes as well as to match the radial symmetry of the aperture
geometry. Remarkably, the transmission properties can be described by a classical waveguide model even for thicknesses of
the silver film as thin as a quarter of a wavelength.
PACS 42.25.Bs; 42.25.Ja; 42.79.Gn |
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