Open AccessSpontaneous emission from a two-level atom embedded in two-band three-dimensional photonic crystals
Author(s) -
San Chen,
Xie Shang-Yuan,
Yuchen Yang,
Hong Chen
Publication year - 2003
Publication title -
wuli xuebao
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.