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用于测量冷原子温度的时序脉冲发生器的设计 被引量：1

Design of a pulse generator used in the measurement of the temperature of ultra-cold atoms
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摘要 近年来人们在激光冷却和捕获原子方面取得了辉煌的成就.对捕获的冷原子团温度、密度的精确测量也成为一个重要的研究课题.在冷原子温度测量中需要在较短时间内(最长不超过几个毫秒)迅速关断俘获冷原子的磁光阱(包括磁场和光场).作者针对时间飞行法测量冷原子温度对光场和磁场的关断要求,设计并制作了一种简单、实用的可调脉冲延时和脉宽的脉冲发生器,应用其产生的脉冲在较短时间内有效地关断磁场和光场,达到冷原子温度测量的要求. Over the past decade there have been a lot of remarkable progress in cooling, trapping and manipulating atoms. The precise measurement of temperature and density of ultra-cold atoms becomes an important subject. In the measurement of the temperature of cold atoms, one needs to turn off the magnetic field and the light field in a very short time （less than several milliseconds）. According to the requirements of the time-flying method in measuring the cold-atom temperature, one can design and make a pulse generator whose pulse-width and delay time are controllable. Then the pulses are applied to the switches of magneto-optical trap, and the magnetic and light field can be turned off in short time successfully.
作者 吴艳 徐云飞 林强 赵永明
机构地区 浙江大学光学研究所
出处 《浙江大学学报（理学版）》 CAS CSCD 北大核心 2005年第6期646-648,652,共4页 Journal of Zhejiang University（Science Edition）
基金 国家自然科学基金重点资助项目(10334050) 浙江大学人才引进启动基金资助
关键词 冷原子 温度测量 脉冲 控制 cold atoms temperature measurements pulses control
分类号 O431.2 [机械工程—光学工程] TP202 [自动化与计算机技术—检测技术与自动化装置]
  • 相关文献

参考文献9

  • 1METEALF H J, DER S P. Laser Cooling and Trapping[M]. New York: Springer, 1999. 73-86.
  • 2DAVIS K B, MEWES M O, ANDREWS M R, et al. Bose-einstein condensation in a gas of sodium atoms[J]. Phys Rev Lett, 1995, 75: 3969-3973.
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同被引文献7

  • 1Meteslf H J,Der S P. Laser Cooling and Trapping[M]. New York: Springer, 1999.73-86.
  • 2Brzozowski T M,Maczynska M,Zawada M,et al. Time-of-flight measurement of the temperature of cold atoms for short trap-probe beam distances[J]. J Opt B: Quantum Semiclass,Opt, 2003,4: 62-66.
  • 3Yi-Zun. Laser cooling and trapping of atoms[M].Beijing: Peking University Press,2007. 178-179. (in Chinese).
  • 4Davis K B,Mewes M O,Andrews M R,et al. Bose-Einstein condensation in a gas of sodium atoms[J]. Phys Rev Lett, 1995,75: 3969- 3973.
  • 5Btadley C C,Sackett C A,Tollett J J,et al. Hulet evidence of Bose- Einstein condensation in an atomic gas with attractive interaction[J]. Phy Rev Lett, 1995,75:1687-1690.
  • 6Lett PD, Watts R N, Westbrook C I,et al. Qbservation of atoms laser cooled below he Doppler limit[J].Phy Rev Lett,1988,61:169-172.
  • 7Bishop R H. Learning with LabVlEW 7 Express[M]. Beijing: Beijing Publishing House of Electronic industry,2005.2-15.

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二级引证文献3

浙江大学学报（理学版）
2005年 第6期

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