Analysis of the influence of the tip vibration in the formation of images in apertureless scanning near-field optical microscopy

Abstract : The theoretical influence of the vertical vibration of the tip is investigated to calculate the images of a quartz grating in an apertureless scanning near-field optical microscope configuration, a realistic model is used for the simulation of the lock-in detection. It is shown that the output signal issued from the lock-in detection cannot be simply approximated by a mere difference between the intensities of the field between the top and bottom positions of the tip oscillation. Several modes of the lock-in detection, amplitude and phase, X and Y channels, at the fundamental frequency or for the following harmonics, though all leading to images containing high spatial frequencies of the grating, show significant differences that can induce misinterpretations in specific cases.
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Submitted on : Thursday, September 19, 2019 - 4:59:30 PM
Last modification on : Friday, September 20, 2019 - 1:25:19 AM

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Pierre-Michel Adam, Jean-Louis Bijeon, G. Viardot, Pascal Royer. Analysis of the influence of the tip vibration in the formation of images in apertureless scanning near-field optical microscopy. Optics Communications, Elsevier, 2000, 174 (1-4), pp.91-98. ⟨10.1016/S0030-4018(99)00700-2⟩. ⟨hal-02292380⟩

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