| 铬原子束的激光多普勒冷却 |
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| 引用本文： | 张文涛,李同保. 铬原子束的激光多普勒冷却[J]. 桂林电子科技大学学报, 2006, 26(3): 174-176 |
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| 作者姓名： | 张文涛 李同保 |
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| 作者单位： | 桂林电子科技大学,电子工程系,广西,桂林,541004;同济大学,物理系,上海,200092;同济大学,物理系,上海,200092 |
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| 摘 要： | 为了满足原子光刻对原子束准直度的要求,设计了一套激光多普勒冷却原子束装置,对铬原子束实施横向多普勒冷却.利用腔外倍频的掺钛蓝宝石激光器获得与铬原子共振跃迁一致的蓝光,并通过一声光调制器(AOM)将激光失谐量调谐至低于原子共振频率5MHz处.文中亦对施加激光冷却场前后铬原子流的分布状态进行了数值模拟,最后的实验结果和模拟结果吻合较好.同时对荧光经过处理计算,激光多普勒冷却使得铬原子束的发散角度可从4.5mrad降低到了0.9mrad.
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| 关 键 词： | 原子光学 激光冷却 原子光刻 |
| 文章编号： | 1001-7437(2006)03-0174-03 |
| 修稿时间： | 2006-04-26 |
Doppler laser cooling of chromium atom beam |
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| ZHANG Wen-tao,LI Tong-bao. Doppler laser cooling of chromium atom beam[J]. Journal of Guilin University of Electronic Technology, 2006, 26(3): 174-176 |
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| Authors: | ZHANG Wen-tao LI Tong-bao |
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| Abstract: | We have laser collimated a chromium atomic beam in one dimension using the Doppler laser cooling technique.The experimental setup was given,in which,the laser was tuned 5MHz below the chromium transition by an AOM,the laser was generated by a frequency-doubled single-mode Ti:Sapphire laser.We also modulated the results of cooling.By calculating,the angular divergence of the atomic beam was reduced from 4.5mrad to 0.9mrad. |
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| Keywords: | atomic optics laser cooling atom lithography |
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