标题： 可调谐线性和二次光机械耦合用于光学腔内倾斜膜：理论与实验 显示英文标题

标题： Tunable linear and quadratic optomechanical coupling for a tilted membrane within an optical cavity: theory and experiment

摘要： 我们对由高精细度光学腔内振动的薄半透明膜组成的光机械系统进行了实验研究。 我们表明，光学腔模与膜振动模之间的耦合可以通过改变膜的位置和方向来调节。 特别是，我们展示了在光学腔模与膜表面散射弱耦合的情况下，对应于避免交叉的强二次离散光机械耦合。 实验结果可通过腔本征模的一阶微扰处理得到良好解释。 显示英文摘要

摘要： We present an experimental study of an optomechanical system formed by a vibrating thin semi-transparent membrane within a high-finesse optical cavity. We show that the coupling between the optical cavity modes and the vibrational modes of the membrane can be tuned by varying the membrane position and orientation. In particular we demonstrate a large quadratic dispersive optomechanical coupling in correspondence with avoided crossings between optical cavity modes weakly coupled by scattering at the membrane surface. The experimental results are well explained by a first order perturbation treatment of the cavity eigenmodes.