2. Principle
The theoretical determination of the image of an object in near-field optical microscopy is a problem of diffraction of electromagnetic waves by a system consisting of the object and the probe.
Many different configurations have been tested in near-field optical microscopy. They all use the same operating principle: evanescent waves are transformed into homogeneous waves.
In this section, we present a theo-ric approach. We'll confine ourselves to using a scalar theory in which the vector and polarization properties of light are ignored. But this formalism is sufficient to describe the general principles of near-field optical microscopy.
2.1 Decomposition into plane-wave spectra
Consider a thin object located...
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Principle
In Engineering Techniques
- (1) - SALVAN (F.) - Microscopie par effet tunnel - . Techniques de l'Ingénieur, P 895, vol. P1 (1989).
- (2) - ARNOLD (M.) - Microscopie optique - . Tech-niques de l'Ingénieur, P 860, vol. P1 (1993).
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