Abstract
Monovalent silver ions have been introduced in a sodium niobium borophosphate glass by poling the glass under heating and high voltage. A silver thin film electrode was previously deposited on the glass surface and put in contact with the anode. Second harmonic generation (SHG) has been obtained after the thermal poling treatment. The SHG signal has been studied through an analysis of transmitted polarized Maker-fringe patterns. The transmitted current curves during poling are registered and compared to the curves obtained from poling of the natural glass by the use of ndoped silicon anode. It indicates a complex space-charge-migration process during the poling treatment resulting in modification of the nonlinear SHG glasses signal profile.
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