Spontaneous emission from a two-level atom embedded in two-band three-dimensional photonic crystals | Zendy

San Chen | Zendy; Xie Shang-Yuan | Zendy; Yang Ya-Ping | Zendy; Hong Chen | Zendy

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Spontaneous emission from a two-level atom embedded in two-band three-dimensional photonic crystals

Author(s) -

San Chen,

Xie Shang-Yuan,

Yang Ya-Ping,

Hong Chen

Publication year - 2003

Publication title -

acta physica sinica

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.199

H-Index - 47

ISSN - 1000-3290

DOI - 10.7498/aps.52.853

Subject(s) - physics , photonic crystal , isotropy , spontaneous emission , condensed matter physics , anisotropy , dispersion relation , oscillation (cell signaling) , dispersion (optics) , position (finance) , population , atom (system on chip) , optics , laser , demography , finance , sociology , computer science , economics , embedded system , biology , genetics

We have studied the properties of the spontaneous emission from a two-level atom embedded in two-band photonic crystals. Due to the anisotropic two-band dispersion relation, the localized and propagating fields cannot coexist, this leads to the non-quasi-oscillation behaviour of the upper level population. Thus the upper level population will tend to a constant as time goes to infinity, or decay with time in a power law, or decay with time exponentially, different from that in the isotropic one-band dispersion relation case. These properties are directly related to the relative position of the upper level from the band edge and the width of the gap.

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