Phase-matched second-harmonic generation in vapor-grown GaP ribbon waveguides

Publisher Website
Google Scholar
Abstract
Phase‐matched second‐harmonic generation has been achieved in twinned as‐grown ribbon ’’whiskers’’ of GaP about 50 μm wide and of submicrometer thicknesses. These naturally occurring slab waveguides were pumped with a Nd : YAG laser at a wavelength of 1.064 μm, and the second‐harmonic output was observed as greenlight at 0.532 μm wavelength. Experiments concerning the second‐harmonic generation are described, and the results are related to those expected from the crystallography of, and the modal dispersion in, the slab‐waveguide ribbons.