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The depolarization near-field scanning optical microscope: comparison of experiment and theory
G von Freymann1, C Adelmann, G Scheiber
1Institut für Angewandte Physik, Karlsruhe, Germany. georg.freymann@physik.uni-karlsruhe.de
Journal of Microscopy
|June 5, 2001
Abstract:
The depolarization near-field scanning optical microscope allows for sub-wavelength optical resolution with uncoated optical fibre tips. We show by a simple thought experiment, by numerical solution of the Maxwell equations for a realistic geometry, and by direct experiments, that this novel apparatus images gradients of the dielectric function of a sample in the direction of the incident electric field vector. The near-field images obtained from experiment and theory agree well.