Microcavities are used for resonantly enhanced interactions of light with matter or particles. Usually, the resonator’s sensitivity drops down with every particle attached to its interface due to the inherent scattering losses and the corresponding degradation of the optical quality factor. Here, we demonstrate, for the first time, a hybrid resonator made of a dielectric disk and a continuous membrane. The membrane is evanescently coupled to the disk while both membrane and disk are mechanically separated. Therefore, the optical mode is co-hosted by the disk and the membrane, while we use a nanopositioning system to control the disk motion. We experimentally demonstrate that spreading scatterers on the membrane and then moving the membrane parallel to the disk brings different scatterers into and out of the optical-mode region. We also show that the membrane’s motion toward the disk results in a 35 GHz drift in the optical resonance frequency. The membrane is continuous in two dimensions and can move a practically unlimited distance in these directions. Furthermore, the membrane can move from a state where it touches the disk to an unlimited distance from the disk. Our continuum-coupled resonator might impact sustainable sensors where the perpetual motion of analytes into and out of the optical-mode region is needed. Additionally, the membrane can carry quantum dots or point defects such as nitrogen-vacancy centers to overlap with the optical mode in a controllable manner. As for non-parallel motion, the membrane’s flexibility and its ability to drift resonance frequency might help in detecting weak forces.

中文翻译：

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由圆盘和可移动连续膜制成的谐振器

微腔用于共振增强光与物质或粒子的相互作用。通常，由于固有的散射损耗和相应的光学品质因数降低，谐振器的灵敏度会随着每个粒子附着在其界面上而下降。在这里，我们首次展示了由介质盘和连续膜制成的混合谐振器。膜e逝地耦合到磁盘，而膜和磁盘都被机械分离。因此，光学模式是由磁盘和膜共同主持的，而我们使用纳米定位系统来控制磁盘的运动。我们通过实验证明，在膜上散布散射体，然后平行于磁盘将膜移动会导致不同的散射体进入和离开光学模式区域。我们还表明，膜朝向磁盘的运动导致光学共振频率出现35 GHz的漂移。该膜在二维上是连续的，并且可以在这些方向上移动几乎无限的距离。此外，膜可以从其接触盘的状态移动到与盘的无限距离。我们的连续耦合谐振器可能会影响可持续的传感器，在这种情况下，需要分析物不断进出光模区域。另外，膜可以携带量子点或点缺陷，例如氮空位中心，以可控的方式与光学模式重叠。对于非平行运动，膜的柔韧性及其漂移共振频率的能力可能有助于检测弱力。