Effective Mode Description for Macroscopic Fabry Pérot Cavities
We introduce an effective modes formalism to describe how the quasi-continuum of photonic modes in an optical cavity effectively behaves in the strong light-matter coupling regime of cavity quantum electrodynamics. By expressing these effective modes, we are able to reproduce the cavity dispersion relation while showing that the mode volumes of these effective modes are independent of the physical area of the Fabry-Pérot cavity mirrors and are instead a measure of light-matter coupling strength, dependent on cavity design parameters such as mirror reflectivity.
physics.optics↗