GHz optomechanical resonators with high mechanical Q factor in air
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Author:
X. Sun, K.Y. Fong, C. Xiong, W.H.P. Pernice, and H.X. Tang
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Abstract
We demonstrate wheel-shaped silicon optomechanical resonators for resonant operation in ambient air. The high finesse of optical whispering gallery modes (loaded optical Q factor above 500,000) allows for efficient transduction of the wheel resonator’s mechanical radial contour modes of frequency up to 1.35 GHz with high mechanical Q factor around 4,000 in air.