title: Features of randomized electric-field assisted domain inversion in lithium tantalate.
abstract: We report on bulk and guided-wave second-harmonic generation via random Quasi-Phase-Matching in Lithium Tantalate. By acquiring the far-field profiles at several wavelengths, we extract statistical information on the distribution of the quadratic nonlinearity as well as its average period, both at the surface and in the bulk of the sample. By investigating the distribution in the two regions we demonstrate a non-invasive approach to the study of poling dynamics.
authors.affiliation: University of Palermo, Viale delle Scienze, Palermo, Italy. salvatore.stivala@unipa.it
authors.forename: Salvatore
authors.initials: S
authors.lastname: Stivala
authors.forename: Fabrizio
authors.initials: F
authors.lastname: Buccheri
authors.forename: Luciano
authors.initials: L
authors.lastname: Curcio
authors.forename: Roberto L
authors.initials: RL
authors.lastname: Oliveri
authors.forename: Alessandro C
authors.initials: AC
authors.lastname: Busacca
authors.forename: Gaetano
authors.initials: G
authors.lastname: Assanto
mesh_terms: D003198:Computer Simulation; D017076:Computer-Aided Design; D004574:Electromagnetic Fields; D004867:Equipment Design; D019544:Equipment Failure Analysis; D008027:Light; D008094:Lithium / Q000737:chemistry* / Q000528:radiation effects*; D008962:Models, Theoretical; D010087:Oxides / Q000737:chemistry* / Q000528:radiation effects*; D012031:Refractometry / Q000295:instrumentation* / Q000379:methods; D012542:Scattering, Radiation; D013635:Tantalum / Q000737:chemistry* / Q000528:radiation effects*
chemical_list: D010087:Oxides; C473347:lithium tantalate oxide; D013635:Tantalum; D008094:Lithium