Dual wavelength coupler for second-harmonic generation in gallium phosphide microdisks

Abstract

During the last decade, second harmonic generation (SHG) in III-V semiconductor microdisks has been demonstrated to be an efficient way to achieve frequency conversion with compact devices. Optimized coupling of both wavelengths to these devices still remains challenging. Here we study the impact of the coupling parameters on the SHG with vertical coupling between integrated waveguides and a III-V microdisk resonator.