Knife-edge technique for laser cooling

WANG Zhan-shan; MA Shan-shan; MA Yan; ZHAO Min; LIU Heng-biao

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Knife-edge technique for laser cooling

更新时间：2020-08-12

- Knife-edge technique for laser cooling
- Optics and Precision Engineering Vol. 14, Issue 1, Pages: 63-69(2006)
- 作者机构：
  
  同济大学精密光学工程技术研究所物理系上海,200092
- 作者简介：
- 基金信息：
- DOI：
  CLC： TN249
- Received：22 October 2005，
  
  Revised：18 December 2005，
  
  Published Online：20 February 2006，
  
  Published：20 February 2006
- 稿件说明：
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WANG Zhan-shan, MA Shan-shan, MA Yan, et al. Knife-edge technique for laser cooling[J]. Optics and precision engineering, 2006, 14(1): 63-69.
DOI：

WANG Zhan-shan, MA Shan-shan, MA Yan, et al. Knife-edge technique for laser cooling[J]. Optics and precision engineering, 2006, 14(1): 63-69. DOI：

摘要

研究了原子束的传输特性、激光冷却的效果及应用刀口技术实现μK量级冷却温度的测量

得出如下结论:原子从原子炉的出射口发射出以后

不论是否经过激光冷却

原子运动的距离越长

分布的均匀性越差。激光冷却可使原子炉出射原子的横向速度降低几个数量级

使原子束经传输后的横向分布均匀度大大提高。刀口技术可用来测量激光冷却后的温度

测量精度主要由测量荧光的CCD的像元尺寸决定。这些结论对深入开展激光冷却实验具有重要的意义。

Abstract

Some researches on transfer characteristics of atomic beam

laser cooling effect

and knife-edge technique's application to measuring the temperature of atoms through laser cooling were investigated. The results show as follows:after atoms emitted from atomic oven

the longer the motive distance of atoms is

the less the distribution of the atomic beam is

no matter the laser cooling is made or not. Laser cooling can make the transverse velocity of the atomic beam reduce several orders and increase the uniformity of the atomic beam also. The knife-edge technique can measure the temperature of the atomic beam through laser cooling

and measured accuracy is decided by the pixel size of CCD for fluorescent imaging of the atomic beam. The results are of great significance to laser cooling experiments in the future.

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references

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