| Spontaneous emission spectrum of a four-level atom in a double-band photonic crystal |
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| 作者姓名： | 王健 杨冬 张汉壮 |
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| 作者单位： | College of Physics, Jilin University, Changchun 130023, China;College of Physics, Jilin University, Changchun 130023, China;College of Physics, Jilin University, Changchun 130023, China |
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| 基金项目： | Project supported by the Scientific Research Foundation of the State Education Ministry for Chinese Scholars, China, and the Innovative Research Foundation of Jilin University. |
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| 摘 要： | The spontaneous emission spectrum from a four-level atom in a double-band photonic crystal has been investigated.We use the model which assumes three atomic transitions. One of the transitions interacts with the free vacuum modes,and the other two transitions couple to the modes of the isotropic photonic band gap (PBG), the anisotropic PBG and another free vacuum. The effects of the fine structure of the lower levels on the spontaneous emission spectrum of an atom are investigated in detail in the three cases. New features of four (two) transparencies with two (one) spontaneous emission peaks, resulting from the fine structure of the lower levels of an atom, are predicted in the case of isotropic PBG modes.
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| 关 键 词： | 光子谱带隙 自发发射光谱 四级原子 自由真空模型 |
| 收稿时间： | 2003-10-16 |
Spontaneous emission spectrum of a four-level atom in a double-band photonic crystal |
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| Wang Jian,Yang Dong and Zhang Han-Zhuang.Spontaneous emission spectrum of a four-level atom in a double-band photonic crystal[J].Chinese Physics B,2005,14(2):323-330. |
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| Authors: | Wang Jian Yang Dong and Zhang Han-Zhuang |
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| Institution: | College of Physics, Jilin University, Changchun 130023, China |
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| Abstract: | The spontaneous emission spectrum from a four-level atom in a double-band photonic crystal has been investigated. We use the model which assumes three atomic transitions. One of the transitions interacts with the free vacuum modes, and the other two transitions couple to the modes of the isotropic photonic band gap (PBG), the anisotropic PBG and another free vacuum. The effects of the fine structure of the lower levels on the spontaneous emission spectrum of an atom are investigated in detail in the three cases. New features of four (two) transparencies with two (one) spontaneous emission peaks, resulting from the fine structure of the lower levels of an atom, are predicted in the case of isotropic PBG modes. |
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| Keywords: | photonic band gap spontaneous emission |
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