中国物理B ›› 2008, Vol. 17 ›› Issue (10): 3672-3677.doi: 10.1088/1674-1056/17/10/024

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Deceleration of a continuous-wave (CW) molecular beam with a single quasi-CW semi-Gaussian laser beam

尹亚玲, 夏 勇, 印建平   

  1. State Key Laboratory of Precision Spectroscopy, Department of Physics, East China Normal University, Shanghai 200062, China
  • 收稿日期:2008-04-28 修回日期:2008-06-01 出版日期:2008-10-20 发布日期:2008-10-20
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant Nos 10374029, 10434060 and 10674047), the National Key Basic Research and Development Program of China (Grant No 2006CB921604), the Key Basic Program of Shanghai Municipality (Grant No 07JC14017), the Program for Changjiang Scholar and Innovative Research Team, and Shanghai Leading Academic Discipline Project (Grant No B408).

Deceleration of a continuous-wave (CW) molecular beam with a single quasi-CW semi-Gaussian laser beam

Yin Ya-Ling(尹亚玲), Xia Yong(夏勇), and Yin Jian-Ping(印建平)†   

  1. State Key Laboratory of Precision Spectroscopy, Department of Physics, East China Normal University, Shanghai 200062, China
  • Received:2008-04-28 Revised:2008-06-01 Online:2008-10-20 Published:2008-10-20
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant Nos 10374029, 10434060 and 10674047), the National Key Basic Research and Development Program of China (Grant No 2006CB921604), the Key Basic Program of Shanghai Municipality (Grant No 07JC14017), the Program for Changjiang Scholar and Innovative Research Team, and Shanghai Leading Academic Discipline Project (Grant No B408).

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摘要： We propose a promising scheme to decelerate a CW molecular beam by using a red-detuned quasi-cw semi-Gaussian laser beam (SGB). We study the dynamical process of the deceleration for a CW deuterated ammonia (ND$_{3})$ molecular beam by Monte-Carlo simulation method. Our study shows that we can obtain a ND$_{3}$ molecular beam with a relative average kinetic energy loss of about 10% and a relative output molecular number of more than 90% by using a single quasi-cw SGB with a power of 1.5kW and a maximum optical well depth of 7.33mK.

关键词: optical Stark deceleration, semi-Gaussian beam

Abstract: We propose a promising scheme to decelerate a CW molecular beam by using a red-detuned quasi-cw semi-Gaussian laser beam (SGB). We study the dynamical process of the deceleration for a CW deuterated ammonia (ND$_{3})$ molecular beam by Monte-Carlo simulation method. Our study shows that we can obtain a ND$_{3}$ molecular beam with a relative average kinetic energy loss of about 10% and a relative output molecular number of more than 90% by using a single quasi-cw SGB with a power of 1.5kW and a maximum optical well depth of 7.33mK.

Key words: optical Stark deceleration, semi-Gaussian beam

中图分类号:  (Photon interactions with molecules)

  • 33.80.-b
42.60.Jf (Beam characteristics: profile, intensity, and power; spatial pattern formation) 33.15.Kr (Electric and magnetic moments (and derivatives), polarizability, and magnetic susceptibility) 31.15.-p (Calculations and mathematical techniques in atomic and molecular physics)