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