A Sub-${\lambda }^3$-Volume Cantilever-based Fabry-Pérot Cavity

Hrishikesh Kelkar, Daqing Wang, Diego Martín-Cano +4

We report on the realization of an open plane-concave Fabry-Pérot resonator with a mode volume below ${\lambda }^3$ at optical frequencies. We discuss some of the less common features of th…