Efficient telecom to visible wavelength conversion in doubly resonant GaP microdisks

David P. Lake, Matthew Mitchell, Harishankar Jayakumar +3

Resonant second harmonic generation between 1550 nm and 775 nm with outside efficiency $>4.4\times 10^{-4}{\text{mW}}^{-1}$ is demonstrated in a gallium phosphide microdisk cavity…