Second-harmonic generation in ion-implanted quartz planar waveguides

We report the first example of second-harmonic generation in a quartz ion-implanted waveguide. The example operated with low-power pumping near 783 nm. The harmonic production near 392 nm follows a square law dependence. A detailed fit of the pumping efficiency with wavelength suggests there is a phase match throughout the length (z propagating) of the sample. The mode match used was between TE0 of the fundamental and TE2 of the harmonic (ordinary index).