Dynamic light diffusion, Anderson localization and lasing in disordered   inverted opals: 3D ab-initio Maxwell-Bloch computation
  We report on 3D time-domain parallel simulations of Anderson localization of light in inverted disordered opals displaying a complete photonic band-gap. We investigate dynamic diffusion processes induced by femtosecond laser excitations, calculate the diffusion constant and the decay-time distribution versus the strength of the disorder. We report evidence of the transition from delocalized Bloch oscillations to strongly localized resonances in self-starting laser processes. 
Claudio Conti and Andrea Fratalocchi