论文标题
水浪波的Fabry-perot共振
Fabry-Perot resonance of water waves
论文作者
论文摘要
我们表明，在水谐振器中获得了显着的水波扩增，该水谐振器由两个空间分离的小振幅正弦波纹斑点在原本平坦的海床上组成。波纹根据所谓的布拉格反射机制反映了入射波，两组之间的距离控制着被困的反射波是否在谐振器中经历建设性或破坏性干扰。随着涟漪数量的增加，增强了所得的扩增或抑制作用，对于特定的谐振长度和Bragg频率最有效，这取决于波纹期确定。我们的分析借鉴了相似的机制，该机制发生在两个部分反射镜子之间，这是一种以其发现者查尔斯·法布里（Charles Fabry）和阿尔弗雷德·佩罗（Alfred Perot）命名的现象。
We show that significant water wave amplification is obtained in a water resonator consisting of two spatially separated patches of small-amplitude sinusoidal corrugations on an otherwise flat seabed. The corrugations reflect the incident waves according to the so-called Bragg reflection mechanism, and the distance between the two sets controls whether the trapped reflected waves experience constructive or destructive interference within the resonator. The resulting amplification or suppression is enhanced with increasing number of ripples, and is most effective for specific resonator lengths and at the Bragg frequency, which is determined by the corrugation period. Our analysis draws on the analogous mechanism that occurs between two partially reflecting mirrors in optics, a phenomenon named after its discoverers Charles Fabry and Alfred Perot.
