Phys. Rev. B 66, 075109 (2002) [5 pages]Tunable three-dimensional photonic crystals using semiconductors with varying free-carrier densitiesReceived 29 April 2002; published 9 August 2002 We show from theoretical calculations that three-dimensional photonic crystals constructed with close-packed air spheres in a semiconductor matrix can exhibit a complete photonic band gap (CPBG) in the near-infrared range. The CPBG is easily tunable by using the free-carrier density dependence of plasma frequencies of semiconductors. The frequency of the defect mode created by inserting a slab of semiconductor into inverted opals is also found to be tunable by changing the density of free carriers of the semiconductor. © 2002 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevB.66.075109
DOI:
10.1103/PhysRevB.66.075109
PACS:
42.70.Qs, 72.80.Tm, 78.20.Ci
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