Efficient modal dispersion phase-matched frequency doubling in poled polymer waveguides

We report the design, manufacture, and characterization of poled polymer multilayer waveguides for frequency doubling. Phase matching is obtained by using modal dispersion between the zeroth-order fundamental lightwave and the first-order second-harmonic wave. By incorporating a very thin high refractive index satellite layer, the phase-match condition can be fulfilled with concomitant large overlap between the two waves, resulting in efficient doubling.