title: Full characterization of dichroic samples from a single measurement by circular polarization orthogonality breaking.
abstract: We report a novel method to unambiguously determine the magnitude and orientation of linear dichroism in a simultaneous way. It is based on the use of a dedicated dual-frequency dual-polarization coherent source providing two orthogonal circularly polarized modes at the output. We show that the interaction of such a beam with dichroic media gives rise to a beatnote signal whose amplitude and phase enable the full determination of the diattenuation coefficient and axis orientation, respectively. The application of this method to polarimetric imaging provides single-shot sample characterization by its diattenuation coefficient and optical axis angle, with potential applications in biomedical imaging.
authors.forename: Noé
authors.initials: N
authors.lastname: Ortega-Quijano
authors.forename: Julien
authors.initials: J
authors.lastname: Fade
authors.forename: Emmanuel
authors.initials: E
authors.lastname: Schaub
authors.forename: François
authors.initials: F
authors.lastname: Parnet
authors.forename: Mehdi
authors.initials: M
authors.lastname: Alouini
mesh_terms: D016880:Anisotropy; D055620:Optical Phenomena