title: Large second-harmonic generation of thermally poled sodium borophosphate glasses.
abstract: Second harmonic generation (SHG) has been obtained in a rich in sodium niobium orophosphate glass by a thermal poling treatment. The thermally poled glass SHG signal has been studied through an original analysis of both transmitted and reflected polarized Maker-fringe patterns. Therefore, the second order nonlinear optical (NLO) efficiency was estimated from the simulation of the Maker-fringe patterns with a stepwise decreasing profile from the anode surface. A reproducible chi(2) susceptibility value as high as 5.0 +/-0.3 pm/V was achieved at the anode side. The nonlinear layer, found to be sodium-depleted up to 5 microm deep inside the anode side, identical to the simulated nonlinear zone thickness, indicates a complex space-charge-migration/ nonlinear glass matrix response process.
authors.forename: Marc
authors.initials: M
authors.lastname: Dussauze
authors.forename: Evelyne
authors.initials: E
authors.lastname: Fargin
authors.forename: Michel
authors.initials: M
authors.lastname: Lahaye
authors.forename: Vincent
authors.initials: V
authors.lastname: Rodriguez
authors.forename: Frédéric
authors.initials: F
authors.lastname: Adamietz