| Temperature Dependence of Dark Lines in Coherent Population Trapping |
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| 作者姓名： | 邓见辽 胡正峰 何慧娟 王育竹 |
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| 作者单位： | Key Laboratory for Quantum Optics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800 |
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| 基金项目： | Supported by the Major State Basic Research Development Programme of China under Grant No 2005CB724507. |
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| 摘 要： | We measure the signal amplitude and linewidth of a dark line in coherent population trapping in the Rb vapour cell filled with mixed buffer gas N2 and Ar as a function of cell temperature. We find that the dark line signal amplitude increases with temperature up to a maximum at 49℃ and then drops at higher temperatures due to quenching effects of N2. The linewidth of the dark line remains basically constant, at 1080 Hz. We also measure the linewidth of the dark line as a function of laser intensity. The linewidth increases linearly with laser intensity. An intrinsic linewidth （FWHM=896 Hz at 3.4 GHz） of the Rb cell is obtained.
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| 关 键 词： | 温度依靠 暗线 连贯种群诱捕 线宽 振幅 |
| 收稿时间： | 2006-01-24 |
| 修稿时间： | 2006-01-24 |
Temperature Dependence of Dark Lines in Coherent Population Trapping |
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| DENG Jian-Liao, HU Zheng-Feng, HE Hui-Juan, WANG Yu-Zhu.Temperature Dependence of Dark Lines in Coherent Population Trapping[J].Chinese Physics Letters,2006,23(7):1745-1748. |
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| Authors: | DENG Jian-Liao HU Zheng-Feng HE Hui-Juan WANG Yu-Zhu |
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