MARCONDES, Lia Mara; ORIVES, Juliane Resges; ADAMIETZ, Frédéric; POIRIER, Gael Yves; CARDINAL, Thierry; DUSSAUZE, Marc; NALIN, Marcelo

doi:10.1016/j.jnoncrysol.2023.122809

Métadonnées

Afficher la notice complète

Licence d’utilisation du document

MARCONDES, Lia Mara
Universidade Estadual Paulista Júlio de Mesquita Filho = São Paulo State University [UNESP]

ORIVES, Juliane Resges
Universidade Estadual Paulista Júlio de Mesquita Filho = São Paulo State University [UNESP]

ADAMIETZ, Frédéric
Institut des Sciences Moléculaires [ISM]

Langue

Article de revue

Ce document a été publié dans

Journal of Non-Crystalline Solids. 2024, vol. 627, p. 122809

Elsevier

Résumé en anglais

Second order nonlinear optical properties and structural rearrangements in GeO 2-Na 2 O-Nb 2 O 5 glasses were achieved by thermal poling. The effects of applied voltage as well as sodium and niobium contents on nonlinear optical (NLO)-active layer were investigated. Structural rearrangements in the anodic microlayer were investigated and occur due to sodium depletion promoting variation in bridging/non-bridging oxygen ratio and formation of a more polymerized network. Quantitative analysis of second harmonic generation signals confirm the electrooptical origin of the nonlinear optical response described by the electric-field-induced second harmonic model. χ (2) susceptibility values range from 0.42 to 0.76 pm/V depending on the niobium content. Lastly, the charge compensation mechanism with increasing applied voltage was described in detail. A progressive decrease in χ (2) for higher voltages was observed due to a greater poled thickness than expected by classical electrostatic models. In this case, the compensation mechanism occurs due to structural rearrangement, redox reactions, and motion of negative charges.< Réduire

Mots clés en anglais

Glass

Thermal poling

Nonlinear optics

URI

https://oskar-bordeaux.fr/handle/20.500.12278/187504

DOI

http://dx.doi.org/10.1016/j.jnoncrysol.2023.122809

Projet Européen

Centre for functional and surface-functionalized glasses

Origine

Importé de hal

Unités de recherche

Institut de Chimie de la Matière Condensée de Bordeaux (ICMCB) - UMR 5026