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Fluorescence imaging of submicrometric lattices of colour centres in LiF by an apertureless scanning near-field optical microscope

Abstract : We report fluorescence imaging of colour centres in Lithium Fluoride (LiF) using an apertureless Scanning Near Field Optical Microscope (SNOM). The sample consists of periodically spaced submicrometric coloured areas F2 laser-active colour centres produced by low-energy electron beam lithography on the surface of a LiF thin film. A silicon Atomic Force Microscope (AFM) tip is used as an apertureless optical probe. AFM images show a uniform surface roughness with a RMS of 7.2 nm. The SNOM images of the red fluorescence of colour centres excited at λ=458 nm with an argon ion laser show that the local photon emission is unambiguously related to the coloured areas and that topographic artefacts can be excluded.
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https://hal-utt.archives-ouvertes.fr/hal-02332461
Contributor : Daniel Gavrysiak <>
Submitted on : Thursday, October 24, 2019 - 5:55:31 PM
Last modification on : Wednesday, October 7, 2020 - 3:14:29 AM

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Pierre-Michel Adam, Sakina Benrezzak, Jean-Louis Bijeon, Pascal Royer, Stéphan Guy, et al.. Fluorescence imaging of submicrometric lattices of colour centres in LiF by an apertureless scanning near-field optical microscope. Optics Express, Optical Society of America - OSA Publishing, 2001, 9 (7), pp.353. ⟨10.1364/OE.9.000353⟩. ⟨hal-02332461⟩

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