Acta Scientiarum Naturalium Universitatis Pekinensis

Previous Articles     Next Articles

Obtaining Ultra-cold Atoms by Optical Molasses Directly from Vapor

HOU Jidong,WANG Xiaohui,CHEN Xuzong,YANG Donghai,WANG Yiqiu   

  1. Department of Electronics, Peking University, Beijing, 100871
  • Received:2000-06-16 Online:2001-09-20 Published:2001-09-20



  1. 北京大学电子学系,北京,100871

Abstract: Usually the magneto-optical trap(MOT)is used to obtain the cold atoms from the vapor. It is reported that experiments for obtaining the ultra-cold cesium atoms by optical molasses directly from the vapor cell without MOT. The lowest temperature achieved for the cesium atomic cloud was 3μK. The relationship between the temperature and the detuning of cooling laser was measured.

Key words: laser cooling, optical molasses, super cold atoms, MOT

摘要: 报告了采用直接从铯蒸汽气室而不用磁光阱实现了光学粘团的方法。用此办法得到了3μΚ的铯的超冷原子团。这是我国目前用激光冷却方法得到的最低温度。具体描述了实验装置和方法,以及测量温度的拟合方法。

关键词: 激光冷却, 光学粘团, 超冷原子, 磁光阱

CLC Number: