title: Deep UV light induced, fast reconfigurable and fixed waveguides in Mg doped LiTaO(3).
abstract: Dynamic waveguides are induced beneath the surface of magnesium doped near-stoichiometric lithium tantalate by deep UV light at lambda = 257 nm using the interband photorefractive effect. The waveguides can be reconfigured in 10 ms at UV intensities of 100 mW/cm(2). We show the importance of the background illumination for the build-up of dynamic optical waveguides. We also present a new fixing process of the light-induced waveguide structures when the background light is absent. These quasi-fixed structures with dark decay times of several days are due to charges trapped in deep traps.
authors.forename: Flurin
authors.initials: F
authors.lastname: Juvalta
authors.forename: Bozena
authors.initials: B
authors.lastname: Koziarska-Glinka
authors.forename: Mojca
authors.initials: M
authors.lastname: Jazbinsek
authors.forename: Germano
authors.initials: G
authors.lastname: Montemezzani
authors.forename: Kenji
authors.initials: K
authors.lastname: Kitamura
authors.forename: Peter
authors.initials: P
authors.lastname: Günter