MALAKHO, Artem; DUSSAUZE, Marc; FARGIN, Evelyne; BIDAULT, Olivier; RODRIGUEZ, Vincent; ADAMIETZ, Frédéric; POUMELLEC, Bertrand

doi:10.1016/j.jssc.2009.02.016

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MALAKHO, Artem
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
Department of Material Science

DUSSAUZE, Marc
Theoretical and Physical Chemistry Institute
Institut des Sciences Moléculaires [ISM]

FARGIN, Evelyne
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]

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Journal of Solid State Chemistry. 2009, vol. 182, n° 5, p. 1156-1163

Elsevier

Résumé en anglais

Thermally poled niobium borophosphate glasses in the system 0.55(0.95−y) NaPO3+y/2 Ba(PO3)2+0.05Na2B4O7)+0.45Nb2O5 were investigated for second order optical nonlinear (SON) properties. Bulk glasses were studied by Raman spectroscopy, thermal analysis, optical and dielectric measurements. The sodium to barium substitution does not lead to significant changes in optical properties, crystallization of glasses and coordination environment of polarizable niobium atoms. However, the ionic conductivity decreases drastically with the increase of barium concentration. Secondary ion mass spectroscopy has been used to determine the element distribution in the anode layer of the thermally poled glasses. The second order optical susceptibilities gradually decrease from χ(2)=2.8 pm/V to zero with the increase of barium content. Using a simple electrical model, variations of nonlinear optical responses have been correlated with dielectric characteristics.< Réduire

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Thermal poling

Space charge

Second harmonic generation

Borophosphate glasses

Ionic conductivity

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Effect of sodium to barium substitution on the space charge implementation in thermally poled glasses for nonlinear optical applications

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