基于亚$\rm λ^{3}$体悬臂梁的法布里-珀罗腔
A Sub-$\rm λ^{3}$-Volume Cantilever-based Fabry-Pérot Cavity
摘要：
我们报告的实现一个开放的平面凹法布里-珀罗谐振腔的模式体积低于$λ^3$在光学频率。我们讨论了一些不太常见的功能，这种新的微腔制度，并表明，超小的模式体积使我们能够检测腔共振位移引起的单个纳米粒子，即使在低至$100$的品质因数。基于低反射率的硅悬臂梁上制作的微镜，我们的实验安排提供了宽带操作，腔谐振的可调谐性，横向扫描和光学机械研究的承诺。
英文摘要：
We report on the realization of an open plane-concave Fabry-Pérot resonator with a mode volume below $λ^3$ at optical frequencies. We discuss some of the less common features of this new microcavity regime and show that the ultrasmall mode volume allows us to detect cavity resonance shifts induced by single nanoparticles even at quality factors as low as $100$. Being based on low-reflectivity micromirrors fabricated on a silicon cantilever, our experimental arrangement provides broadband operation, tunability of the cavity resonance, lateral scanning and promise for optomechanical studies.
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