Abstract
The interaction of light with mechanical motion—optomechanics [1, 2, 3, 4]—is now investigated in a wide variety of experimental settings. In the last years, the field also benefited from the advances of nanophotonics. We discuss here the merits of Gallium Arsenide (GaAs) optomechanical disk resonators, which bring together high mechanical frequency, ultra-strong optomechanical coupling and low optical/mechanical dissipation. Based on a relatively simple geometry, these miniature optomechanical resonators permit a complete on-chip optical integration, a natural interfacing with optically active elements and the combination with optoelectronics architectures typical of III–V semiconductors.
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