Xiong Hao, Gan Jinghui, Wu Ying
School of Physics, Huazhong University of Science and Technology, Wuhan 430074, People's Republic of China.
Phys Rev Lett. 2017 Oct 13;119(15):153901. doi: 10.1103/PhysRevLett.119.153901.
A Kuznetsov-Ma soliton that exhibits an unusual pulsating dynamics has attracted particular attention in hydrodynamics and plasma physics in the context of understanding nonlinear coherent phenomena. Here, we demonstrate theoretically the formation of a novel form of Kuznetsov-Ma soliton in a microfabricated optomechanical array, where both photonic and phononic evolutionary dynamics exhibit periodic structure and coherent localized behavior enabled by radiation-pressure coupling of optical fields and mechanical oscillations, which is a manifestation of the unique property of optomechanical systems. Numerical calculations of the optomechanical dynamics show an excellent agreement with this theory. In addition to providing insight into optomechanical nonlinearity, optomechanical Kuznetsov-Ma soliton dynamics fundamentally broadens the regime of cavity optomechanics and may find applications in on-chip manipulation of light propagation.
一种呈现出异常脉动动力学的库兹涅佐夫-马孤子，在理解非线性相干现象的背景下，在流体动力学和等离子体物理学中引起了特别关注。在此，我们从理论上证明了在微纳加工光机械阵列中一种新型库兹涅佐夫-马孤子的形成，其中光子和声子的演化动力学均呈现出周期性结构以及由光场与机械振荡的辐射压力耦合所实现的相干局域行为，这是光机械系统独特性质的一种体现。光机械动力学的数值计算结果与该理论高度吻合。除了有助于深入理解光机械非线性之外，光机械库兹涅佐夫-马孤子动力学从根本上拓宽了腔光机械学的范畴，并可能在片上光传播操控方面找到应用。
