Spontaneous emission from an atom in a photonic crystal with two coherent bands

doi:10.1088/1674-1056/21/5/054218

中国物理B ›› 2012, Vol. 21 ›› Issue (5): 54218-054218.doi: 10.1088/1674-1056/21/5/054218

Spontaneous emission from an atom in a photonic crystal with two coherent bands

黄仙山,刘海莲,王东

School of Mathematics and Physics, Anhui University of Technology, Maanshan 243002, China

收稿日期:2011-08-14 修回日期:2012-04-27 出版日期:2012-04-01 发布日期:2012-04-01
基金资助:
Project supported by the Natural Science College Key Projects of Anhui Province, China (Grant No. KJ2010A335) and the National Natural Science Foundation of China (Grant No. 41075027).

Spontaneous emission from an atom in a photonic crystal with two coherent bands

Huang Xian-Shan(黄仙山)^†, Liu Hai-Lian(刘海莲), and Wang Dong(王东)

School of Mathematics and Physics, Anhui University of Technology, Maanshan 243002, China

Received:2011-08-14 Revised:2012-04-27 Online:2012-04-01 Published:2012-04-01
Supported by:
Project supported by the Natural Science College Key Projects of Anhui Province, China (Grant No. KJ2010A335) and the National Natural Science Foundation of China (Grant No. 41075027).

摘要/Abstract

摘要： The dynamic and the radiative properties of an excited three-level atom embedded in an anisotropic photonic crystal with two coherent bands are investigated. The relative position of the atom in a Wigner--Seitz cell is described with a position-dependent parameter θ(r₀), which is used as the coherent parameter for the two bands. The result shows that the dynamic properties of the atomic system are not only determined by atomic transition frequencies, but also affected by the gap width and the coherence of the two bands. In addition, the spontaneous emission spectrum of the atomic transition in free space is discussed. The center and the intensity of the spectrum can be obviously manipulated via the coherent parameter.

关键词: spontaneous emission, photonic crystals, coherent photonic reservoir

Abstract: The dynamic and the radiative properties of an excited three-level atom embedded in an anisotropic photonic crystal with two coherent bands are investigated. The relative position of the atom in a Wigner--Seitz cell is described with a position-dependent parameter θ(r₀), which is used as the coherent parameter for the two bands. The result shows that the dynamic properties of the atomic system are not only determined by atomic transition frequencies, but also affected by the gap width and the coherence of the two bands. In addition, the spontaneous emission spectrum of the atomic transition in free space is discussed. The center and the intensity of the spectrum can be obviously manipulated via the coherent parameter.

Key words: spontaneous emission, photonic crystals, coherent photonic reservoir

中图分类号: (Photonic bandgap materials)

42.70.Qs

42.50.Gy (Effects of atomic coherence on propagation, absorption, and Amplification of light; electromagnetically induced transparency and Absorption)

黄仙山, 刘海莲, 王东. Spontaneous emission from an atom in a photonic crystal with two coherent bands[J]. 中国物理B, 2012, 21(5): 54218-054218.

Huang Xian-Shan(黄仙山), Liu Hai-Lian(刘海莲), and Wang Dong(王东) . Spontaneous emission from an atom in a photonic crystal with two coherent bands[J]. Chin. Phys. B, 2012, 21(5): 54218-054218.

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Spontaneous emission from an atom in a photonic crystal with two coherent bands

Spontaneous emission from an atom in a photonic crystal with two coherent bands

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