Coherent scattering phenomena in apertureless scanning near-field fluorescence microscopy

Abstract : We study near-field fluorescence images of samples composed of aggregates of 100 nm dye-doped latex spheres. These images have been performed by a reflection Apertureless Scanning Near-field Optical Microscope (A-SNOM). We show that the near-field distribution in fluorescence A-SNOM images arises from coherent scattering phenomena between all spheres. This is a consequence of the coherent nature of the fluorescence emission of each single sphere. The results shown here are significant for all fluorescent samples characterised by a nonnegligible topography.
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https://hal-utt.archives-ouvertes.fr/hal-02298353
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Submitted on : Thursday, September 26, 2019 - 4:34:41 PM
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Séverine Diziain, Pierre-Michel Adam, Jean-Louis Bijeon, Pascal Royer. Coherent scattering phenomena in apertureless scanning near-field fluorescence microscopy. Optics Communications, Elsevier, 2007, 276 (1), pp.180-185. ⟨10.1016/j.optcom.2007.03.078⟩. ⟨hal-02298353⟩

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