| Absorption properties of a driven Doppler—broadened ladder system with hyperfine structure |
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| 引用本文： | 吴金辉,高锦岳. Absorption properties of a driven Doppler—broadened ladder system with hyperfine structure[J]. 中国物理, 2002, 11(6): 572-577. DOI: 10.1088/1009-1963/11/6/310 |
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| 作者姓名： | 吴金辉 高锦岳 |
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| 作者单位： | (1)College of Physics, Jilin University, Changchun 130023, China; (2)College of Physics, Jilin University, Changchun 130023, China; China Center of Advanced Science and Technology (World Laboratory), Beijing 100080, China |
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| 基金项目： | Project supported in part by the National Natural Science Foundation of China (Grant No 60078015), and by the Doctoral Programme Foundation of the Institution of Higher Education of China (Grant No 19201038). |
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| 摘 要： | We have studied the absorption spectrum of a Doppler-broadened ladder system,where the highest level is coupled into two middle hyperfine sublevels by a strong coherent field.We find that,when the system is considered as homogeneous,either two or three spectral components are observed,depending on the detuning of the coherent field.but when the velocity distribution of atoms is considered,we can always observe one electromagnetically induced transparency (EIT) window with high dispersion.So the atomic hyperfine structure cannot be an impediment for obtaining EIT.
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| 关 键 词： | 多能级原子 多普勒加宽阶梯系统 吸收特性 量子光学 |
| 收稿时间： | 2001-11-09 |
| 修稿时间： | 2002-01-06 |
Absorption properties of a driven Doppler-broadened ladder system with hyperfine structure |
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| Wu Jin-Hui and Gao Jin-Yue. Absorption properties of a driven Doppler-broadened ladder system with hyperfine structure[J]. Chinese Physics, 2002, 11(6): 572-577. DOI: 10.1088/1009-1963/11/6/310 |
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| Authors: | Wu Jin-Hui and Gao Jin-Yue |
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| Affiliation: | College of Physics, Jilin University, Changchun 130023, China; China Center of Advanced Science and Technology (World Laboratory), Beijing 100080, China |
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| Abstract: | We have studied the absorption spectrum of a Doppler-broadened ladder system, where the highest level is coupled into two middle hyperfine sublevels by a strong coherent field. We find that, when the system is considered as homogeneous, either two or three spectral components are observed, depending on the detuning of the coherent field. But when the velocity distribution of atoms is considered, we can always observe one electromagnetically induced transparency (EIT) window with high dispersion. So the atomic hyperfine structure cannot be an impediment for obtaining EIT. |
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| Keywords: | absorption spectrum electromagnetically induced transparency dressed atomic states |
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