Phase-matched second-harmonic generation in a flux grown KTP crystal ridge optical waveguide

Opt Lett. 2018 Aug 1;43(15):3770-3773. doi: 10.1364/OL.43.003770.

Abstract

Type II second-harmonic generation was performed in a 15.8-mm-long KTiOPO4 (KTP) micrometric ridge waveguide with an average transversal section of 38 μm2. Theoretical predictions are compared with experiments. Strong agreements are obtained for both phase-matching wavelengths and second-harmonic intensity. This work opens wide perspectives for integrated parametric optics.