Omnidirectional reflection from one-dimensional quasi-periodic photonic crystal containing left-handed material

In this Letter, we study the properties of one-dimensional quasi-periodic photonic crystal containing left-handed material. In the light of the dispersion relation, we show that one-dimensional quasi-periodic photonic crystal can exhibit complete reflection at a given microwave frequency for all incident angles and both polarizations (s- and p-polarizations). The influence of left-handed material's permittivity and permeability on the omnidirectional reflection is also discussed. We find that when vertical bar epsilon vertical bar is larger than vertical bar mu vertical bar, it is difficult to realize the omnidirectional reflection for p-polarization, on the contrary, it is difficult to realize the omnidirectional reflection for s-polarization when vertical bar mu vertical bar is larger than vertical bar epsilon vertical bar, which is expected to realize omnidirectional reflection in a certain frequency region. The effect of the left-handed material's absorption on omnidirectional reflection is also investigated. (c) 2005 Elsevier B.V. All rights reserved.