title: On the origin of internal field in Lithium Niobate crystals directly observed by digital holography.
abstract: We show the defect dependence of the internal field in Lithium Niobate using a full-field interferometric method and demonstrate that it can be directly measured on some clusters of defects embedded in a stoichiometric matrix. Results show that the value of the internal field grows in proximity of defects and vanishes far from them, which addresses the long-standing issue about its origin in Lithium Niobate crystal.
authors.forename: Melania
authors.initials: M
authors.lastname: Paturzo
authors.forename: Pietro
authors.initials: P
authors.lastname: Ferraro
authors.forename: Simonetta
authors.initials: S
authors.lastname: Grilli
authors.forename: Domenico
authors.initials: D
authors.lastname: Alfieri
authors.forename: Paolo
authors.initials: P
authors.lastname: De Natale
authors.forename: Marcella
authors.initials: M
authors.lastname: de Angelis
authors.forename: Andrea
authors.initials: A
authors.lastname: Finizio
authors.forename: Sergio
authors.initials: S
authors.lastname: De Nicola
authors.forename: Giovanni
authors.initials: G
authors.lastname: Pierattini
authors.forename: Federico
authors.initials: F
authors.lastname: Caccavale
authors.forename: David
authors.initials: D
authors.lastname: Callejo
authors.forename: Alessandro
authors.initials: A
authors.lastname: Morbiato