LASBRUGNAS, Carine; THOMAS, Philippe; MASSON, Olivier; CHAMPARNAUD-MESJARD, Jean-Claude; FARGIN, Evelyne; RODRIGUEZ, Vincent

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LASBRUGNAS, Carine
Science des Procédés Céramiques et de Traitements de Surface [SPCTS]

THOMAS, Philippe
Axe 3 : organisation structurale multiéchelle des matériaux

MASSON, Olivier
Axe 3 : organisation structurale multiéchelle des matériaux

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Ce document a été publié dans

Glass Technology. 2005, vol. 46, n° 2, p. 71-75

Society of Glass Technology

Résumé en anglais

Second harmonic signals have been successfully generated in thermally poled 85%TeO2–15%WO3 glasses. Thermal poling of these glasses was undertaken at various temperatures and heating times using a voltage of 4·5 kV. The sample thickness was 500 mum. Second harmonic generation (SHG) in the poled glasses was analysed using the Maker fringes technique. After optimisation of the poling conditions (T=280°C, t=1 h), high chi(2) values (about 1·6 pm/V) were obtained. It was demonstrated that this thermal poling treatment has generated optically nonlinear zones on the anodic surface. The thickness of the surface layer given a SHG was thin (5·22 mum), as classically observed with tellurite glasses. The possible reorientation, under electric field, of the glass structural entities could be the origin of such second order nonlinear properties.< Réduire

Mots clés en anglais

Tellurite glasses

Second harmonic generation

Tungsten

Origine

Importé de hal

Unités de recherche

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