Large second-harmonic generation of thermally poled sodium borophosphate glasses

Marc Dussauze (1) , Evelyne Fargin (1) , Michel Lahaye (1) , Vincent Rodriguez (2) , Frédéric Adamietz (2)

1 ICMCB - Institut de Chimie de la Matière Condensée de Bordeaux
2 LPCM - Laboratoire de Physico-Chimie Moléculaire

Second harmonic generation (SHG) has been obtained in a rich in sodium niobium borophosphate 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 χ(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 µm deep inside the anode side, identical to the simulated nonlinear zone thickness, indicates a complex space-charge-migration/ nonlinear glass matrix response process.

Mots clés: Amorphous materials; Glass; Nonlinear optical materials

Domaines: Matériaux; Optique [physics.optics]

Marc Dussauze, Evelyne Fargin, Michel Lahaye, Vincent Rodriguez, Frédéric Adamietz. Large second-harmonic generation of thermally poled sodium borophosphate glasses. Optics Express, 2005, 13 (11), pp.4064-4069. ⟨10.1364/OPEX.13.004064⟩. ⟨hal-00019287⟩