Fluorine and sodium depletion followed by refractive index modification imprinted on fluorophosphate glass surface by thermal poling

Autor(es)

Galleani, Gustavo ; Abou Khalil, Alain ; Canioni, Lionel ; Dussauze, Marc ; Fargin, Evelyne ; Cardinal, Thierry ; de Camargo, Andrea S. S.

• Tipo de documento: Artigo Científico
• Fonte: Journal of Non-Crystalline Solids; v. 601, p. 7-pg., 2023-02-01.

Resumo

Thermal poling using microstructured electrodes on oxyfluoride glasses have been investigated and the impact on optical properties was evaluated. A micrometer refractive index modification based on the sodium and fluorine migration has been evidenced, through the creation of a layer with different chemical composition as compared to the original glass. Topological and optical properties modifications after poling treatment are discussed. For the first time, we described the migration of negative fluorine ion in the direction of the cathode from the glass network. Na and F migration led to a layer richer in oxides with a strong contrast of + 0.06 of the refractive index in the imprinted structures. (AU)

• Processo FAPESP: 13/07793-6 - CEPIV - Centro de Ensino, Pesquisa e Inovação em Vidros
• Beneficiário: Edgar Dutra Zanotto
• Modalidade de apoio: Auxílio à Pesquisa - Centros de Pesquisa, Inovação e Difusão - CEPIDs
• Processo FAPESP: 19/12442-4 - Poling térmico de vidros oxifluoreto: geração de propriedades não-lineares de segunda ordem e modificação de superfície por microimpressão
• Beneficiário: Gustavo Galleani
• Modalidade de apoio: Bolsas no Exterior - Estágio de Pesquisa - Pós-Doutorado