Abstract
In scanning near field optical microscopy (SNOM), a tip whose dimensions are small compared with the wavelength serves as a light-emitting antenna. Light is transmitted from a source via a waveguide structure to this antenna. An important part of an SNOM probe — apart from the detailed structure of the tip — is the link between the macroscopic waveguide and the antenna of subwavelength dimensions. A partially metal-coated tetrahedral tip is considered to be a structure fulfilling these functions. Motivations for the choice of this structure are models of metal waveguide structures without cutoff and the fact that surface plasmons can be excited on planar metal films and along edges as well as on tips. Aspects of probe fabrication and first results of tests of their optical properties are reported.
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© 1993 Springer Science+Business Media Dordrecht
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Fischer, U.C. (1993). The Tetrahedral Tip as a Probe for Scanning Near-Field Optical Microscopy. In: Pohl, D.W., Courjon, D. (eds) Near Field Optics. NATO ASI Series, vol 242. Springer, Dordrecht. https://doi.org/10.1007/978-94-011-1978-8_28
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DOI: https://doi.org/10.1007/978-94-011-1978-8_28
Publisher Name: Springer, Dordrecht
Print ISBN: 978-94-010-4873-6
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