Second and third order optical processes in anisotropic polymer waveguides

Second harmonic generation and linear optical properties of thin layers and optical wave-guides prepared by Langmuir-Blodgett-technique or spin-coating/corona poling from new maleic acid anhydride (MAA) polymers carrying NLO chromophores in the side chain, from polymethylmethacrylate/disperse red host-guest systems and from 2-docosylamino-5-nitropyridine (DCANP) amphiphiles have been studied. We found that high-quality wave-guides with high non-linear optical coefficients can be prepared from all of these materials either by LB or by spin-coating/corona poling. We reached phase matching for special wave guide structures. By computer simulation we evaluated the intensity distribution within wave-guide for the fundamental, second and third harmonic wave based on coupled amplitude equations.