| 测量冷原子温度的理论与近似拟合公式的误差分析 |
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| 引用本文： | 马杰,韩燕旭,王波,王海.测量冷原子温度的理论与近似拟合公式的误差分析[J].量子光学学报,2006,12(2):80-84. |
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| 作者姓名： | 马杰 韩燕旭 王波 王海 |
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| 作者单位： | 量子光学与光量子器件国家重点实验室,山西大学光电研究所,山西,太原,030006 |
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| 基金项目： | 中国科学院资助项目，教育部高校科技创新工程重大项目，山西省自然科学基金，山西省留学回国人员科研项目 |
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| 摘 要： | 对短程飞行时间法(tim e-of-flight,TOF)中推算冷原子温度的理论拟合公式与近似拟合公式进行了误差分析与比较。研究表明:对于使用短程飞行吸收光谱信号推测冷原子团温度,当探测光光斑半径与冷原子团高斯半径之比k小于0.2时,理论拟合公式和近似拟合公式能很好的相符,随着探测光光斑半径与冷原子团高斯半径比值的逐渐增大,用近似拟合公式所得TOF吸收信号与用理论拟合公式所得TOF吸收信号的误差也将逐渐增大,当比值为0.5时,用近似拟合公式所得TOF吸收信号的误差将增大到20%。
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| 关 键 词： | 磁光阱(MOT) 冷原子 短程飞行时间法(TOF) |
| 文章编号： | 1007-6654（2006）02-0080-05 |
| 收稿时间： | 2005-12-31 |
| 修稿时间： | 2005年12月31 |
The Error Analyzing and Comparing between Theoretical and Approximate Simulated Formula in Measuring The Temperature of Cold Atoms with Short-distance Time-of-flight Method |
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| MA Jie,HAN Yan-xu,WANG Bo,WANG Hai.The Error Analyzing and Comparing between Theoretical and Approximate Simulated Formula in Measuring The Temperature of Cold Atoms with Short-distance Time-of-flight Method[J].Acta Sinica Quantum Optica,2006,12(2):80-84. |
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| Authors: | MA Jie HAN Yan-xu WANG Bo WANG Hai |
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| Institution: | State Key Laboratory of Quantum Optics and Quantum Optics Devices and lnstitude of Opto-Electronics Shanxi University, Taiyuan 030006, China |
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| Abstract: | The error analyzing and comparing between theoretical and approximate simulated formula in measuring the temperature of cold atoms with short-distance time-of-flight(TOF) method are reported.The results shows that the approximate simulated formula aqrees well with the theoretical simulated formula when the ratio of the radius of probe to the cold atoms is less than 0.2.When the ratio of the radius of probe to the cold atoms approachs 0.5,the error between the approximate simulated formula with the theoretical simulated formula for TOF absorption signal is significant. |
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| Keywords: | magnetic optical trap(MOT) cold atoms short-distance time-of-flight(TOF) |
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