Introduction Of Silver In Poled Sodium And Niobium Borophosphate Glasses: Characterisation By Electrical Transmitted Current And Shd Measurements

Monovalent silver ions have been introduced in a sodium niobium borosphate glass by poling the gl;ass 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 transmitteed polarised Maker-fringe patterns. The transmitteed current curves during poling are registered and compared to the cureved obtained poling the natural glass by the use of non doped silicon anode. It indicates a complex space-charge-migration process during the poling treatment resulting in modofcation of the non linear SHG glasses signal profile.