论文标题
开放可调的Fabry-Perrot微型腔的计算和优化
Computation and optimization of the Purcell factor of an open tunable Fabry-Perot microcavity
论文作者
论文摘要
可以通过将它们放置在形成光腔的两个镜子之间来控制原子的自发发射。在过去的十年中，材料加工技术的快速进步使得可以制造微观光腔，这些光腔可以与发射极的共振进行细微的调整。这使得在单光子源，纳米激光器和新纳米发射器的光谱中取得了进展，例如钻石中的半导体量子点和氮 - 脱位中心。在这里，我们引入了一种逐步计算用于微型发光研究中使用的开放式Fabry-Perot微腔的percell因子的分步方法。我们讨论如何根据腔的几何形状来优化purcell因子，并找到与发射极共振的条件。还考虑了诸如发射极的光学特性和电场的穿透深度之类的细微之处。
The spontaneous emission of atoms can be controlled by placing them between two mirrors that form an optical cavity. Rapid advances in material processing techniques in the last 10 years have made it possible to fabricate microscopic optical cavities that can be finely tuned into resonance with the emitter. This has enabled progress in single-photon sources, nano-lasers and spectroscopy of new nano-emitters such as semiconductor quantum dots and Nitrogen-vacancy centres in diamond. Here we introduce a step-by-step method for computing the Purcell factor of the latest generation of open tunable Fabry-Perot microcavities used in micro-photoluminescence studies. We discuss how the Purcell factor can be optimised as a function of the cavity's geometry and find the conditions for resonance with the emitter. Subtleties such as the optical properties of the emitter and penetration depth of the electric field into the cavity mirrors are also considered.
