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We have studied the properties of spontaneous emission from a three-level atom embedded in a photonic crystal. Due to the anisotropic dispersion relation, the density of states lacks singularity. The localized field can disappear and the diffusion field can become intense in some regions.This is different from that in the isotropic dispersion relation case. These properties are directly related to the relative positions of the two upper levels from the band edge.
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Keywords:
- photonic crystal /
- three-level atom /
- spontaneous emission
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