| 各向异性光子晶体中Λ型原子的自发辐射性质 |
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| 引用本文： | 黄仙山,谢双媛,羊亚平.各向异性光子晶体中Λ型原子的自发辐射性质[J].物理学报,2006,55(2):696-703. |
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| 作者姓名： | 黄仙山 谢双媛 羊亚平 |
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| 作者单位： | 同济大学物理系， 上海 200092;同济大学物理系， 上海 200092;同济大学物理系， 上海 200092 |
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| 基金项目： | 国家自然科学基金(批准号：90203007,60507008)、上海市启明星跟踪计划(批准号：04QMH1407)及同济大学理科发展基金资助的课题. |
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| 摘 要： | 讨论了各向异性光子晶体中Λ型三能级原子的辐射性质. 研究发现，原子上能级与光子晶体带边的相对位置和两低能级相对位置将直接影响原子的动力学性质及其周围辐射场的性质. 通过数值计算和理论分析，得到了光子晶体中原子周围辐射场在不同位置随时间演化的图像，并讨论了光子晶体对原子辐射谱的影响.
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| 关 键 词： | 光子晶体 辐射场 辐射谱 |
| 收稿时间： | 3/4/2005 12:00:00 AM |
| 修稿时间： | 7/4/2005 12:00:00 AM |
Spontaneous emission from a Λ-type atom in anisotropic photonic crystal |
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| Huang Xian-Shan,Xie Shuang-Yuan and Yang Ya-Ping.Spontaneous emission from a Λ-type atom in anisotropic photonic crystal[J].Acta Physica Sinica,2006,55(2):696-703. |
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| Authors: | Huang Xian-Shan Xie Shuang-Yuan and Yang Ya-Ping |
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| Institution: | Department of Physics, Tongji University, Shanghai 200092, China |
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| Abstract: | The spontaneous emission properties of a Λ_type atom embedded in anisotropic photonic crystals are investigated. We find that the dynamical properties of the atom and the propagating characteristics of the radiation field are obviously influenced by the relative position of the upper level from the forbidden gap and the space between the two lower levels. With the help of numerical calculation and theoretical analysis, we plot the evolution of the total radiation field and its components with the time. Furthermore, we also study the influence of photonic crystals on radiative properties of the atom by means of spontaneous emission spectrum. |
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| Keywords: | photonic crystals radiation field radiative spectrum |
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