Jiang Wei C, Lu Xiyuan, Zhang Jidong, Lin Qiang
Institute of Optics, University of Rochester, Rochester, New York 14627, USA.
Opt Express. 2012 Jul 2;20(14):15991-6. doi: 10.1364/OE.20.015991.
We demonstrate a highly efficient optomechanical oscillator based upon a small silicon microdisk resonator with a 2-μm radius. The device exhibits a strong optomechanical coupling of 115 GHz/nm and a large intrinsic mechanical frequency-Q product of 4.32 × 10(12) Hz. It is able to operate at a high frequency of 1.294 GHz with an ultralow threshold of 3.56 μW while working in the air environment. The high efficiency, high frequency together with the structural compactness and CMOS compatibility of our device enables great potential for broad applications in photonic-phononic signal processing, sensing, and metrology.
我们展示了一种基于半径为2μm的小型硅微盘谐振器的高效光机械振荡器。该器件表现出115 GHz/nm的强光机械耦合以及4.32×10¹² Hz的大固有机械频率-Q乘积。它能够在空气环境中以1.294 GHz的高频运行，超低阈值为3.56 μW。我们器件的高效率、高频以及结构紧凑性和CMOS兼容性使其在光子-声子信号处理、传感和计量等广泛应用中具有巨大潜力。
