期刊
PHYSICAL REVIEW LETTERS
卷 84, 期 10, 页码 2136-2139出版社
AMERICAN PHYSICAL SOC
DOI: 10.1103/PhysRevLett.84.2136
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Spontaneous emission in photonic crystals with anisotropic three-dimensional dispersion relation is studied. If the upper level is below a characteristic frequency omega(1), or above omega(2), or between omega(1) and omega(2), the radiation is a localized field with a frequency in the band gap, or a propagating field with a frequency in the band, or a diffusion field, respectively An analytical expression for the Lamb shift Is obtained. The Lamb shift for the current case is small compared to that in an ordinary vacuum or in one- or two-dimensional photonic crystals due to lower density of states.
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