摘要：

Photonic-Band-Gap (PBG) materials are a distinct class of dielectrics which facilitate the control over both propagation of light and the inhibition of spontaneous emission of light from atoms and molecules. The successful fabrication of such structures ( A. Birner et al., Phys. Stat. Sol (a) 165), 111 (1998); J.E.G.J. Wijnhoven and W.L. Vos, Science 281, 802 (1998) represents a great leap towards an integrated photonic. In this talk, we demonstrate that complete three-dimensional PBGs, spanning roughly 10% and 15% of the gap center frequency are attainable by incomplete infiltration of an opal with silicon and germanium, respectively (K. Busch und S. John, Phys. Rev. E 58), 3896 (1998). In addition, we show that when an optically birefringent nematic liquid crystal is infiltrated into the void regions of an inverse opal PBG material, the resulting composite material exhibits a completely tunable PBG (K. Busch und S. John, Phys. Rev. Lett. 83), 967 (1999). Measurements on analogous two-dimensional Photonic Crystals show that the photonic band edge may be shifted by more than 100 nm (S.W. Leonard et al., Phys. Rev. B (rapid), in press). note

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