标题： 耦合有源-无源微谐振器中的动力学声子激光器 显示英文标题

标题： Dynamical Phonon Laser in Coupled Active-Passive Microresonators

摘要： 通过耦合的两个携带机械振荡的微腔之间有效过渡的光学本征模式实现声子的光学两能级激光的类比。 我们提出了一种不依赖于稳态的弱非线性系统动力学方程线性化方法，并以此研究这种声子激光行为作为一种现实的动力学过程，特别是当其中一个腔体加入光学增益介质时，表现出时间相关的受激声子场放大。 我们所提出的这种方法明确给出了最佳声子激光条件，发现热噪声能够显著促进声子激光行为。 显示英文摘要

摘要： Effective transition between the population-inverted optical eigenmodes of two coupled microcavities carrying mechanical oscillation realizes a phonon analogue of optical two-level laser. By providing an approach that linearizes the dynamical equations of weak nonlinear systems without relying on their steady states, we study such phonon laser action as a realistic dynamical process, which exhibits time-dependent stimulated phonon field amplification especially when one of the cavities is added with optical gain medium. The approach we present explicitly gives the conditions for the optimum phonon lasing, and thermal noise is found to be capable of facilitating the phonon laser action significantly.