Abstract

Ionic pyrylium salt dyes in spin-coated waveguides have been shown recently to be good candidates for frequency conversion to the blue region of the spectrum,^1,2 particularly by anomalous dispersion phase-matching (ADPM). Because the dye was charged, the film was naturally self-aligning and poling was not required. Selfalignment provides robust structures, since they are not prone to relaxation. However, the nonlinearity was determined to be only at the film/substrate interface, thus limiting wave interaction.²

© 2001 Optical Society of America