论文标题
脉冲响应函数的模态扩展用于预测开放光腔的时间动力学
Modal Expansion of the Impulse Response Function for Predicting the Time Dynamics of Open Optical Cavities
论文作者
论文摘要
与光腔的光相互作用具有基本兴趣，可以增强光磁相互作用并塑造电磁场的光谱特征。已经采取了重要的努力来开发依靠腔体特征场田地扩展的开放光腔的模态理论。在这里，我们展示了这样的扩展如何预测光谐振器的时间动力学。我们考虑一个Fabry-Perot腔，以在准正常模式基础上得出内部和分散场的完整分析表达式以及复杂的特征频率。在得出开放腔的脉冲响应函数（IRF）之前，我们会证明这种扩展的融合和准确性。我们受益于这种模态扩展和IRF，以证明开放空腔的特征模式仅在瞬态制度中而不是在永久性制度中影响信号。
Light interaction with optical cavities is of fundamental interest to enhance the light-matter interaction and to shape the spectral features of the electromagnetic fields. Important efforts have been carried out to develop modal theories of open optical cavities relying on an expansion of the fields on the eigen-fields of the cavity. Here, we show how such an expansion predicts the temporal dynamics of optical resonators. We consider a Fabry-Perot cavity to derive the full analytical expressions of the internal and scattered field on the quasi-normal modes basis together with the complex eigen-frequencies. We evince the convergence and accuracy of this expansion before deriving the impulse response function (IRF) of the open cavity. We benefit from this modal expansion and IRF to demonstrate that the eigen-modes of the open cavity impact the signals only during the transient regimes and not in the permanent regime.
