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Department of Physics

Staff profile

Publication details for Prof Richard Abram

Beggs, D M, Kaliteevski, M A, Abram, R A, Cassagne, D & Albert, J P (2005). Disorder-induced modification of the transmission of light through two-dimensional photonic crystals. Journal of Physics: Condensed Matter 17(12): 1781-1790.

Author(s) from Durham

Abstract

Disordered two-dimensional photonic crystals with a complete photonic band-gap have been investigated. Transmission and reflection spectra have been modelled for both ballistic and scattered light. The density of states and electromagnetic field profiles of disorder-induced localized states have also been calculated, for various levels of disorder. It is found that there is a threshold-like behaviour in the amount of disorder. Below the threshold, it is seen that there is a vanishing probability of disorder-induced localized states being introduced into the centre of the photonic band-gap, but that edge-states narrow the band-gap. Above the threshold, there is a non-zero probability of disorder-induced localized states throughout the photonic band-gap, and the modification of the transmission and reflection spectra due to disorder rapidly increases with increasing disorder.