论文标题
远程非侵入性Fabry-Perot腔光谱，用于无标签感应
Remote non-invasive Fabry-Perot cavity spectroscopy for label-free sensing
论文作者
论文摘要
光学监测分子浓度的一种方法是利用Fabry-Perot腔的传播和反射速率的高灵敏度对其光学性质的变化。到目前为止，已经考虑了将分析物放置在谐振器内部，或者与外部的evanevaneScent场耦合，从而考虑了内在和外在的Fabry-Perrot腔传感器。在这里，我们表明，Fabry-Perrot腔也可用于非侵入性和远程监测分子浓度，因为从目标分子反射回到Fabry-Perrot腔中，将光的反射添加到其整体反射率的最小值中。检测这些峰的幅度揭示了有关分子浓度的信息。通过使用一系列光腔，可以立即探测多种频率，并可以获得独特的光学指纹。
One way of optically monitoring molecule concentrations is to utilise the high sensitivity of the transmission and reflection rates of Fabry-Perot cavities to changes of their optical properties. Up to now, intrinsic and extrinsic Fabry-Perot cavity sensors have been considered with analytes either being placed inside the resonator or coupled to evanescent fields on the outside. Here we show that Fabry-Perot cavities can also be used to monitor molecule concentrations non-invasively and remotely, since the reflection of light from the target molecules back into the Fabry-Perot cavity adds upwards peaks to the minima of its overall reflection rate. Detecting the amplitude of these peaks reveals information about molecule concentrations. By using an array of optical cavities, a wide range of frequencies can be probed at once and a unique optical fingerprint can be obtained.
