Large second-order nonlinearity in poled fused silica.
作者： R. A. Myers , N. Mukherjee , S. R. J. Brueck
DOI: 10.1364/OL.16.001732
关键词: Fiber 、 Poling 、 Non linearite 、 Nonlinear system 、 Glass Poling 、 Optics 、 Laser beams 、 Nonlinear optics 、 Electric field 、 Materials science
摘要: A large second-order nonlinearity [ χ(2)~1 pm/V~0.2 χ22(2) for LiNbO3] is induced in the near-surface (~4 μm) region of commercial fused-silica optical flats by a temperature (250–325°C) and electric-field (E ~ 5 × 104 V/cm) poling process. Once formed, nonlinearity, which roughly 103–104 times larger than that found fiber second-harmonic experiments, extremely stable at room laboratory ambient. The can be cycled repeated depoling (temperature only) repoling electric field) processes without history effects. Possible mechanisms, including nonlinear moieties electric-field-induced nonlinearities, are discussed.
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