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4. Near-field optical microscope
4.1 Principles of the near-field optical microscope
The limit of spatial resolution reached in conventional optical microscopy (the so-called Abbe diffraction limit) is of the order of λ/2 where λ is the wavelength of the radiation. Electromagnetic waves at wavelength λ that interact with an object are diffracted into two components: progressive waves at low spatial frequency (< 2/λ) and evanescent...
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Near-field optical microscope
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