13 October 1998 Experimental and theoretical characterization of aperture probe cantilevers for polarization-sensitive SNOM
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Abstract
Microfabricated aperture probes for SNOM applications revealed polarization properties which seem to depend on the aperture geometry which is well defined due to the fabrication process. A finite integration approach was used to theoretically calculate the optical transmission characteristics of these probes. In particular the influence of the aperture aspect ratio and the metal film thickness on the transmission and the polarization properties is studied in detail. A modified tip geometry is proposed to improve both, the light confinement at the tip apex and the polarization properties of the aperture probe.
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O. Rudow, Christopher Mihalcea, A. Vollkopf, Egbert Oesterschulze, "Experimental and theoretical characterization of aperture probe cantilevers for polarization-sensitive SNOM", Proc. SPIE 3467, Far- and Near-Field Optics: Physics and Information Processing, (13 October 1998); doi: 10.1117/12.326808; https://doi.org/10.1117/12.326808
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KEYWORDS
Polarization

Near field scanning optical microscopy

Waveguides

Metals

Near field optics

Geometrical optics

Image processing

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