A Numerical Analysis of Zero-Dimensional Fabry-Pérot Micro-Cavities

This thesis develops numerical models of zero-dimensional Fabry-Pérot micro-cavities and uses them to study what happens when hexagonal boron nitride freeform lenses are introduced into the cavity.

Systematically varying lens shape and configuration reveals a clear dependence of transverse confinement on lens curvature, along with distinct behaviour once multiple lenses are present. Existing models are first reproduced as a validation step; the original analysis then extends them, laying groundwork for exploring arbitrary hBN geometries in optical device engineering.