title: Toward endoscopes with no distal optics: video-rate scanning microscopy through a fiber bundle.
abstract: We report a step toward scanning endomicroscopy without distal optics. The focusing of the beam at the distal end of a fiber bundle is achieved by imposing a parabolic phase profile across the exit face with the aid of a spatial light modulator. We achieve video-rate images by galvanometric scanning of the phase tilt at the proximal end. The approach is made possible by the bundle, designed to have very low coupling between cores.
authors: Institut Fresnel, Aix-Marseille Université, CNRS, École Centrale Marseille, Domaine Universitaire de Saint Jérôme, Marseille, France. esben.andresen@fresnel.fr
authors: Esben Ravn
authors: ER
authors: Andresen
authors: Géraud
authors: G
authors: Bouwmans
authors: Serge
authors: S
authors: Monneret
authors: Hervé
authors: H
authors: Rigneault
mesh_terms: D019723:Endoscopes; D008853:Microscopy / Q000295:instrumentation*; D055100:Optical Fibers