High-frequency GaAs bullseye optomechanical resonator

Authors :: Newton C. Frateschi
Gustavo S. Wiederhecker
Rodrigo Benevides
Thiago P. Mayer Alegre
N. C. Carvalho
Michael Menard
Source :: Conference on Lasers and Electro-Optics.
Publication Year :: 2020
Publisher :: Optica Publishing Group, 2020.
Abstract: We fabricated and measured a GaAs bullseye resonator able to operate above 3 GHz when coupled to whispering gallery optical modes. Our large phononic bandgap allowed us to observe the symmetry break caused by the material anisotropy and obtain optomechanical coupling rates above 30 kHz.