{"id":{"repo_id":"aachen","oai_identifier":"oai:publications.rwth-aachen.de:62161"},"canonical_url":"https://search.dev.ndltd.org/etd/aachen/oai:publications.rwth-aachen.de:62161","repository":{"repo_id":"aachen","name":"RWTH Aachen University","base_url":"https://publications.rwth-aachen.de/oai2d"},"display":{"title":"Aufbau eines magnetooptischen Rasternahfeldmikroskops im Reflexionsmodus und Test an periodischen Mikrostrukturen und magnetooptischen Speichermedien","abstract":"Construction of a magneto-optic scanning near-field microscope in reflection mode and test on periodic microstructures and magneto-optic storage media. The scanning near-field optical microscope (SNOM) enhances the diffraction-limited resolution of a conventional microscope. In this work a magneto-optical SNOM, which can measure the Faraday and Kerr rotation of transparent respective opaque samples quantitatively with high spatial resolution, was built. After an introduction into the principles of near-field optics and magneto-optics the experimental set-up of a SNOM is outlined with special emphasis on the properties of near-field light sources. One part of the work is dedicated to the dependence of the optical and magneto-optical signal on the sample topography. It is shown that topographic sample features induce strong artifacts in high-resolution optical and magneto-optical images. A model for simulating these artifacts is presented. Based on these findings the magneto-optical data acquired on magneto-optic storage media and Co/Pt test samples are interpreted. Kerr rotations of 0.4 degrees have been locally resolved in reflection mode. Sub-wavelength-sized magnetic domains have been measured in transmission mode using visible light (lambda = 488 nm).","abstract_html":"Construction of a magneto-optic scanning near-field microscope in reflection mode and test on periodic microstructures and magneto-optic storage media. The scanning near-field optical microscope (SNOM) enhances the diffraction-limited resolution of a conventional microscope. In this work a magneto-optical SNOM, which can measure the Faraday and Kerr rotation of transparent respective opaque samples quantitatively with high spatial resolution, was built. After an introduction into the principles of near-field optics and magneto-optics the experimental set-up of a SNOM is outlined with special emphasis on the properties of near-field light sources. One part of the work is dedicated to the dependence of the optical and magneto-optical signal on the sample topography. It is shown that topographic sample features induce strong artifacts in high-resolution optical and magneto-optical images. A model for simulating these artifacts is presented. Based on these findings the magneto-optical data acquired on magneto-optic storage media and Co/Pt test samples are interpreted. Kerr rotations of 0.4 degrees have been locally resolved in reflection mode. 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The scanning near-field optical microscope (SNOM) enhances the diffraction-limited resolution of a conventional microscope. In this work a magneto-optical SNOM, which can measure the Faraday and Kerr rotation of transparent respective opaque samples quantitatively with high spatial resolution, was built. After an introduction into the principles of near-field optics and magneto-optics the experimental set-up of a SNOM is outlined with special emphasis on the properties of near-field light sources. One part of the work is dedicated to the dependence of the optical and magneto-optical signal on the sample topography. It is shown that topographic sample features induce strong artifacts in high-resolution optical and magneto-optical images. A model for simulating these artifacts is presented. Based on these findings the magneto-optical data acquired on magneto-optic storage media and Co/Pt test samples are interpreted. Kerr rotations of 0.4 degrees have been locally resolved in reflection mode. Sub-wavelength-sized magnetic domains have been measured in transmission mode using visible light (lambda = 488 nm)."]},{"key":"dc:source","label":"Dc Source","values":["Aachen : Publikationsserver der RWTH Aachen University IV, 125 S. : Ill., graph. Darst. (1999). = Aachen, Techn. Hochsch., Diss., 1999"]},{"key":"dc:title","label":"Title","values":["Aufbau eines magnetooptischen Rasternahfeldmikroskops im Reflexionsmodus und Test an periodischen Mikrostrukturen und magnetooptischen Speichermedien"]}]}],"canonical_facts":{"dc:contributor":["Güntherodt, Gernot"],"dc:coverage":["DE"],"dc:creator":["Rosenberger, Andreas"],"dc:date":["1999"],"dc:description":["Construction of a magneto-optic scanning near-field microscope in reflection mode and test on periodic microstructures and magneto-optic storage media. The scanning near-field optical microscope (SNOM) enhances the diffraction-limited resolution of a conventional microscope. In this work a magneto-optical SNOM, which can measure the Faraday and Kerr rotation of transparent respective opaque samples quantitatively with high spatial resolution, was built. After an introduction into the principles of near-field optics and magneto-optics the experimental set-up of a SNOM is outlined with special emphasis on the properties of near-field light sources. One part of the work is dedicated to the dependence of the optical and magneto-optical signal on the sample topography. It is shown that topographic sample features induce strong artifacts in high-resolution optical and magneto-optical images. A model for simulating these artifacts is presented. Based on these findings the magneto-optical data acquired on magneto-optic storage media and Co/Pt test samples are interpreted. 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Hochsch., Diss., 1999"],"dc:subject":["info:eu-repo/classification/ddc/530","Physik","Optisches Nahfeldmikroskop","Magnetooptik"],"dc:title":["Aufbau eines magnetooptischen Rasternahfeldmikroskops im Reflexionsmodus und Test an periodischen Mikrostrukturen und magnetooptischen Speichermedien"],"dc:type":["info:eu-repo/semantics/doctoralThesis","info:eu-repo/semantics/publishedVersion"]},"updated_at":"2026-07-30T19:43:19Z"}