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          Institute: MPI für Biochemie     Collection: Structural Biology (W. Baumeister)     Display Documents



ID: 318435.0, MPI für Biochemie / Structural Biology (W. Baumeister)
Pure optical contrast in scattering-type scanning near-field microscopy
Authors:Hillenbrand, R.; Knoll, B.; Keilmann, F.
Date of Publication (YYYY-MM-DD):2001
Title of Journal:Journal of Microscopy
Volume:202
Start Page:77
End Page:83
Audience:Not Specified
Abstract / Description:We have enhanced the apertureless scattering-type scanning nearfield optical microscope by two improvements which together achieve a recording of the true near field without any height-induced artefact. These are the use of interferometric detection of the scattered light on one hand, and the use of higher-harmonic dither demodulation of the scattered signal on the other. Here we present the basic rationale for these techniques, and give examples measured with two different experiments, one in the infrared (10 µm wavelength), the other in the visible (633 nm). The latter operates in a fully heterodyne mode and displays simultaneous images of optical near-field phase and amplitude, at below 10 nm resolution.
External Publication Status:published
Document Type:Article
Communicated by:Anton Hillebrand
Affiliations:MPI für Biochemie/Structural Biology (W. Baumeister)/
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