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 |ɛ| is larger than |μ|, 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 |μ| is larger than |ɛ|, 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.