title: Berry Phase of Light under Bragg Reflection by Chiral Liquid-Crystal Media.
abstract: A Berry phase is revealed for circularly polarized light when it is Bragg reflected by a chiral liquid-crystal medium of the same handedness. By using a chiral nematic layer we demonstrate that if the input plane of the layer is rotated with respect to a fixed reference frame, a geometric phase effect occurs for the circularly polarized light reflected by the periodic helical structure of the medium. Theory and numerical simulations are supported by an experimental observation, disclosing novel applications in the field of optical manipulation and fundamental optical phenomena.
authors: Departamento de Física, FCFM, Universidad de Chile, Casilla 487-3 Santiago, Chile.
authors: Raouf
authors: R
authors: Barboza
authors: INLN, Université de Nice-Sophia Antipolis, CNRS, 1361 Route des Lucioles, 06560 Valbonne, France.
authors: Umberto
authors: U
authors: Bortolozzo
authors: Departamento de Física, FCFM, Universidad de Chile, Casilla 487-3 Santiago, Chile.
authors: Marcel G
authors: MG
authors: Clerc
authors: INLN, Université de Nice-Sophia Antipolis, CNRS, 1361 Route des Lucioles, 06560 Valbonne, France.
authors: Stefania
authors: S
authors: Residori