Figure 1From: The Study of Quantum Interference in Metallic Photonic Crystals Doped with Four-Level Quantum DotsPlot of the Bloch wave vector K as a function of the normalized photon energy for a metallic PBG. The vertical dashed lines show ε v /ε p and ε c /ε p which are the maximum normalized energy of the lower energy band and the minimum normalized energy of the upper energy band, respectively. The refractive index of background is n2 = 1.5Back to article page