Large second order optical nonlinearity in thermally poled amorphous niobium borophosphate films
Langue
en
Article de revue
Ce document a été publié dans
Journal of Applied Physics. 2006, vol. 100, n° 1, p. 013108
American Institute of Physics
Résumé en anglais
Thin films of sodium niobium borophosphate glass were deposited on silicon wafer and borosilicate glass substrates by radio frequency sputtering. Thermal poling of the films was performed under various voltage conditions. ...Lire la suite >
Thin films of sodium niobium borophosphate glass were deposited on silicon wafer and borosilicate glass substrates by radio frequency sputtering. Thermal poling of the films was performed under various voltage conditions. The chemical composition of the films after poling was controlled by x-ray energy dispersive spectroscopy and compared to the initial composition. The second harmonic signals generated by thermal poling were analyzed in reflection mode. The recorded complex Maker fringes pattern signals were simulated and fitted using a multilayer model for the estimation of the second harmonic generation nonlinear coefficients chi(2). The results are compared to previously published chi(2) coefficients obtained for bulk oxide glasses (~3 pm/V, approximately fourfold as strong as the highest value reported in thermally poled fused silica). Resulting from this study thermally poled niobium sodium borophosphate thin films are revealed of real interest as potential electro-optic devices.< Réduire
Mots clés en anglais
Frequency conversion
Harmonic generation
Glasses
Electrooptical effects
Ferroelectricity and antiferroelectricity
X-ray spectroscopy
Origine
Importé de halUnités de recherche