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

Carsten Cleff, Alicja Gasecka, Patrick Ferrand, Hervé Rigneault, Sophie Brasselet and Julien Duboisset ()
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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
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

Nature Communications, 2016, vol. 7, issue 1, 1-7

Abstract: 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.

Date: 2016
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DOI: 10.1038/ncomms11562

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