The wavelength dispersion of the phase shift on reflection that is inh
erent in dielectric Bragg mirrors can be used to phase compensate reso
nant-cavity-based devices such as multiple quantum well asymmetric Fab
ry-Perot spatial light modulators and vertical cavity surface-emitting
lasers. We demonstrate the post-growth ability to accurately fine-tun
e the location of the Fabry-Perot minima in a resonant cavity by emplo
ying either a normal or inverted dielectric mirror configuration. The
dielectric multilayer mirrors are composed of alternating quarter-wave
layers of MgF2 and Sb2S3, and exhibit broadband reflectivities.