  Micro-domes based on a combination of metallic and dielectric multilayer
mirrors are studied using a fully vectorial numerical basis-expansion method
that accurately accounts for the effects of an arbitrary Bragg stack and can
efficiently cover a large range of dome shapes and sizes. Results are examined
from three different viewpoints: (i) the ray-optics limit, (ii) the (semi-)
confocal limit for which exact wave solutions are known, and (iii) the paraxial
approximation using vectorial Gaussian beams.
