Finlayson, Christopher Edward; Haines, Andrew I.; Snoswell, David R. E.; Kontogeorgos, Andreas; Vignolini, Silvia; Baumberg, Jeremy J.; Spahn, Peter; Hellmann, G. Peter
(2011)
We report how the strength of resonant Bragg reflection from polymeric photonic crystals (polymer opals) varies linearly with the refractive-index contrast, Δn, in contrast to the quadratic buildup of Fresnel reflections ...