Simultaneous generation of red, green and blue lightin asegmented KTP waveguide using a single source

Abstract

Guided white light output has been generated in a quasi-phasematched KTP waveguide. Red (825 nm), green (550 nm) and blue (412.5 nm) coherent radiation is obtained through simultaneous second-harmonic generation, sum-frequency generation, and fourth-harmonic generation of a single laser source at 1650 nm.