Second Harmonic Generation In a GaN Photonic Crystal Cavity on Silicon

Authors :: Philippe Boucaud
Xavier Checoury
Fabrice Semond
Iännis Roland
Zheng Han
M. El Kurdi
Meletios Mexis
Y. Zeng
Bruno Gayral
Christelle Brimont
Thierry Guillet
Sébastien Sauvage
Source :: Scopus-Elsevier
Publication Year :: 2015
Publisher :: OSA, 2015.
Abstract: We report on second harmonic generation in a free-standing gallium nitride photonic crystal cavity fabricated on a silicon substrate. The cavity is resonant at 1577 nm and the harmonic conversion is obtained with a continuous wave laser. High resolution spatial imaging of the second harmonic field allows us to make the correlation between the harmonic emission pattern and the dominating second order polarization P z .