Apertureless near field optical microscopy: a contribution to the understanding of the signal detected in the presence of a background field

Sylvain Hudlet 1 Sébastien Aubert 1 Aurélien Bruyant 1 Renaud Bachelot 1 Pierre-Michel Adam 1 Jean-Louis Bijeon 1 Gilles Lerondel 1 Pascal Royer 1 Andrei Stashkevich 2
1 LNIO - Laboratoire de Nanotechnologie et d'Instrumentation Optique
ICD - Institut Charles Delaunay
2 LPMTM - Laboratoire des Propriétés Mécaniques et Thermodynamiques des Matériaux
Abstract : Apertureless scanning near field optical microscopy techniques have become a common way of studying surface samples. By using a nano-probe that scatters the electromagnetic non-propagative waves emerging from a given sample, this microscopy provides optical images with a resolution beyond the diffraction limit. Despite a great diversity of works covering a wide variety of physical domains, the formation of the images obtained is not yet fully understood. The purpose of this letter is to assess the influence of the tip position and imposed oscillation of the tip in apertureless SNOM when a background field is added to the scattered near field. We propose a simple analytical model which enables us to account for the experimental results and explains how, depending on the experimental conditions, the near field signal can totally disappear or, on the contrary, be greatly enhanced.
Keywords : Near-field scanning microscopy and spectroscopy Imaging and optical processing Scanning probe microscopes and components
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Journal articles
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https://hal-utt.archives-ouvertes.fr/hal-02292669
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Submitted on : Friday, September 20, 2019 - 9:48:12 AM
Last modification on : Sunday, September 22, 2019 - 1:08:55 AM

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Sylvain Hudlet, Sébastien Aubert, Aurélien Bruyant, Renaud Bachelot, Pierre-Michel Adam, et al.. Apertureless near field optical microscopy: a contribution to the understanding of the signal detected in the presence of a background field. Optics Communications, Elsevier, 2004, 230 (4-6), pp.245-251. ⟨10.1016/j.optcom.2003.11.029⟩. ⟨hal-02292669⟩

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