Experimental and theoretical characterization of aperture probe cantilevers for polarization-sensitive SNOM

O. Rudow; Christopher Mihalcea; A. Vollkopf; Egbert Oesterschulze

doi:10.1117/12.326808

13 October 1998 Experimental and theoretical characterization of aperture probe cantilevers for polarization-sensitive SNOM

O. Rudow, Christopher Mihalcea, A. Vollkopf, Egbert Oesterschulze

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Proceedings Volume 3467, Far- and Near-Field Optics: Physics and Information Processing; (1998) https://doi.org/10.1117/12.326808
Event: SPIE's International Symposium on Optical Science, Engineering, and Instrumentation, 1998, San Diego, CA, United States

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, and 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); https://doi.org/10.1117/12.326808

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