Abstract
For optoelectronics and electrooptic modulators, in particular, materials must possess not only a high nonlinear susceptibility but also such attributes as ease of preparation, fabrication into waveguides, and stability. Compared to lithium niobate, poled amorphous organic materials offer important advantages. Polymers doped with nonlinear optical molecules have been extensively studied as potential nonlinear materials but generally suffer from limited solubility and fast relaxation after poling. We present results on two new and different organic amorphous materials, poled monomeric organic glasses, and poled covalently functionalized polymers. The monomeric glasses were made from organic molecules of known high nonlinearity, while the covalently functionalized amorphous polymer was made by attaching paranitroaniline groups to every monomer unit of a polymer backbone to form a new material, polyparanitroaniline (p-pNA). This way, the desired high densities of nonlinear active molecules are achieved.
© 1989 Optical Society of America
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