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Direct imaging of molecular symmetry by coherent anti-stokes Raman scattering

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  • Carsten Cleff

    (Aix-Marseille Université, CNRS, Centrale Marseille, Institut Fresnel, UMR 7249, Domaine Universitaire de Saint Jérôme, Avenue Escadrille Normandie Niemen, Marseille, F-13397, France)

  • Alicja Gasecka

    (Quebec Mental Health Institute Research Center, Laval University
    Centre d’Optique, Photonique et Laser (COPL), Laval University)

  • Patrick Ferrand

    (Aix-Marseille Université, CNRS, Centrale Marseille, Institut Fresnel, UMR 7249, Domaine Universitaire de Saint Jérôme, Avenue Escadrille Normandie Niemen, Marseille, F-13397, France)

  • Hervé Rigneault

    (Aix-Marseille Université, CNRS, Centrale Marseille, Institut Fresnel, UMR 7249, Domaine Universitaire de Saint Jérôme, Avenue Escadrille Normandie Niemen, Marseille, F-13397, France)

  • Sophie Brasselet

    (Aix-Marseille Université, CNRS, Centrale Marseille, Institut Fresnel, UMR 7249, Domaine Universitaire de Saint Jérôme, Avenue Escadrille Normandie Niemen, Marseille, F-13397, France)

  • Julien Duboisset

    (Aix-Marseille Université, CNRS, Centrale Marseille, Institut Fresnel, UMR 7249, Domaine Universitaire de Saint Jérôme, Avenue Escadrille Normandie Niemen, Marseille, F-13397, France)

Abstract

Nonlinear optical methods, such as coherent anti-Stokes Raman scattering and stimulated Raman scattering, are able to perform label-free imaging, with chemical bonds specificity. Here we demonstrate that the use of circularly polarized light allows to retrieve not only the chemical nature but also the symmetry of the probed sample, in a single measurement. Our symmetry-resolved scheme offers simple access to the local organization of vibrational bonds and as a result provides enhanced image contrast for anisotropic samples, as well as an improved chemical selectivity. We quantify the local organization of vibrational bonds on crystalline and biological samples, thus providing information not accessible by spontaneous Raman and stimulated Raman scattering techniques. This work stands for a symmetry-resolved contrast in vibrational microscopy, with potential application in biological diagnostic.

Suggested Citation

  • Carsten Cleff & Alicja Gasecka & Patrick Ferrand & Hervé Rigneault & Sophie Brasselet & Julien Duboisset, 2016. "Direct imaging of molecular symmetry by coherent anti-stokes Raman scattering," Nature Communications, Nature, vol. 7(1), pages 1-7, September.
    • Handle: RePEc:nat:natcom:v:7:y:2016:i:1:d:10.1038_ncomms11562
    DOI: 10.1038/ncomms11562
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