title: Optical field-induced mass transport in As2S3 chalcogenide glasses.
abstract: We report the observation of a photorefractivelike nonlinearity responsible for the formation of giant relief modulations in amorphous semiconductor glasses. The photoinduced softening of the matrix, formation of defects with enhanced polarizability, and their drift under the optical field gradient force is believed to be the origin of the mass transport.
authors.affiliation: Center of Optics, Photonics and Lasers, Department of Physics, Pav. A. Vachon, Laval University, Québec, Canada.
authors.forename: A
authors.initials: A
authors.lastname: Saliminia
authors.forename: T V
authors.initials: TV
authors.lastname: Galstian
authors.forename: A
authors.initials: A
authors.lastname: Villeneuve