论文标题
液体中使用气泡簇振荡的声频梳：概念证明
Acoustic frequency combs using gas bubble cluster oscillations in liquids: a proof of concept
论文作者
论文摘要
我们提出了一种新的方法来生成声频率梳子（AFC） - 具有含有等距相干峰的光谱的信号。 AFC对于多种感应和测量应用至关重要，其中既定的光学频率梳子的技术都受到基本的物理限制。我们的原则证明实验表明，由于低压单频率超声波波产生信号，气泡簇在水中的非线性振荡，其光谱是由源于驱动超声波的相互作用的光谱，该光谱由驱动超声波的相互作用与泡沫群的响应在其自然频率下的响应。如此生成的AFC具有光学频率梳的基本特征，因此，与它们的光学相似，可用于测量各种物理，化学和生物学量。
We propose a new approach to the generation of acoustic frequency combs (AFC) -- signals with spectra containing equidistant coherent peaks. AFCs are essential for a number of sensing and measurement applications, where the established technology of optical frequency combs suffers from fundamental physical limitations. Our proof-of-principle experiments demonstrate that nonlinear oscillations of a gas bubble cluster in water insonated by a low-pressure single-frequency ultrasound wave produce signals with spectra consisting of equally spaced peaks originating from the interaction of the driving ultrasound wave with the response of the bubble cluster at its natural frequency. The so-generated AFC posses essential characteristics of optical frequency combs and thus, similar to their optical counterparts, can be used to measure various physical, chemical and biological quantities.
