Theory of Optical Transmission Through a Near-Field Probe With a Dissipative Matter in its Core
V. S. Lebedev, T. I. Kuznetsova, A. M. Tsvelik
Abstract
We develop a theory of light transmission through an aperture-type near-field optical probe with a dissipative matter in its semiconducting core described by a complex frequency-dependent dielectric function. We evaluate the near-field transmission coefficient of a metallized silicon probe with a large taper angle of in the visible and near-infrared wavelength range. It is shown that in this spectral range the use of a short silicon probe instead of a glass one allows to achieve a strong (up to 102-103) enhancement in the transmission efficiency.
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