GLASS ELECTROTHERMAL POLING AND CHARACTERIZATION TECHNIQUES / POLARIZAÇÃO ELETROTÉRMICA DE VIDROS E TÉCNICAS DE CARACTERIZAÇÃO

AUTOR(ES)
DATA DE PUBLICAÇÃO

2004

RESUMO

It is possible to create a second order non linearity in silica samples with the poling process. The glass samples with an induced X(2) have a potential application on the fabrication of optical devices such as modulators and frequency converters. In the electrothermal poling process, high voltage and high temperature are applied to the samples forming an ion depleted region (depletion layer), where an intense electric field is permanently recorded. In this work, several characterization techniques have been utilized to measure the width of the depletion layer and compared the obtained results. The chosen techniques were: Interferometric Etching, Maker Fringe, Optical and Atomic Force Microscopy and the Interferometric Etching with Real Time Second Harmonic Measurement. In addition to this, we performed other studies aiming the optimization and reproducibility of the poling process. In this way, we analyzed the material used for the electrodes and the influence of the initial condition of the sample surface before poling.

ASSUNTO(S)

nonlinear optics geracao de segundo harmonico second harmonic generation optica nao-linear tecnicas de caracterizacao de amostras polarizadas glass electrothermal poling poled samples characterization techniques polarizacao eletrotermica de vidros

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