Carmon Tal, Cross M C, Vahala Kerry J
California Institute of Technology, 1200 E. California Blvd, Pasadena, California 91125, USA.
Phys Rev Lett. 2007 Apr 20;98(16):167203. doi: 10.1103/PhysRevLett.98.167203. Epub 2007 Apr 19.
Opto-mechanical chaotic oscillation of an on-chip resonator is excited by the radiation-pressure nonlinearity. Continuous optical input, with no external feedback or modulation, excites chaotic vibrations in very different geometries of the cavity (both tori and spheres) and shows that opto-mechanical chaotic oscillations are an intrinsic property of optical microcavities. Measured phenomena include period doubling, a spectral continuum, aperiodic oscillations, and complex trajectories. The rate of exponential divergence from a perturbed initial condition (Lyapunov exponent) is calculated. Continuous improvements in cavities mean that such chaotic oscillations can be expected in the future with many other platforms, geometries, and frequency spans.
片上谐振器的光机械混沌振荡由辐射压力非线性激发。连续光输入，无需外部反馈或调制，能在非常不同的腔几何结构（环面和球体）中激发混沌振动，并表明光机械混沌振荡是光学微腔的固有属性。测量到的现象包括倍周期、光谱连续体、非周期振荡和复杂轨迹。计算了从受扰初始条件出发的指数发散率（李雅普诺夫指数）。腔的不断改进意味着未来在许多其他平台、几何结构和频率跨度下都有望出现这种混沌振荡。
