The depolarization near-field scanning optical microscope: comparison of experiment and theory.
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.
von Freymann
G
G
Institut für Angewandte Physik, Karlsruhe, Germany. georg.freymann@physik.uni-karlsruhe.de
Adelmann
C
C
Scheiber
G
G
Schimmel
T
T
Wegener
M
M