title: Multistate polarization addressing using a single beam in an azo polymer film.
abstract: Peculiar light-matter interactions can break the rule that a single beam polarization can address only two states in an optical memory device. Multistate storage of a single beam polarization is achieved using self-induced surface diffraction gratings in a photoactive polymer material. The grating orientation follows the incident light beam's polarization direction. The permanent self-induced surface relief grating can be read out in real time using the same laser beam.
authors.affiliation: Laboratoire POMA, UMR 6136-Université d'Angers 2, Boulevard Lavoisier, 49045 Angers, France.
authors.forename: S Ahmadi
authors.initials: SA
authors.lastname: Kandjani
authors.forename: R
authors.initials: R
authors.lastname: Barille
authors.forename: S
authors.initials: S
authors.lastname: Dabos-Seignon
authors.forename: J M
authors.initials: JM
authors.lastname: Nunzi
authors.forename: E
authors.initials: E
authors.lastname: Ortyl
authors.forename: S
authors.initials: S
authors.lastname: Kucharski