Stark Deceleration of an Effusive Molecular Beam by a Single Semi-Gaussian Beam  

作　　者：尹亚玲 夏勇 印建平 

机构地区：[1]Key Laboratory for Optical and Magnetic Resonance Spectroscopy of the Ministry of Education, Department of Physics, East China Normal University, Shanghai 200062

出　　处：《Chinese Physics Letters》2006年第10期2737-2740,共4页中国物理快报（英文版）

基　　金：Supported by the National Natural Science Foundation of China under Grant Nos 10174050, 10374029 and 10434060, the Science and Technology Commission of Shanghai under Grant No 04DZ14009, the Shanghai Priority Academic Discipline, the 211 Foundation of the Ministry of Education of China, and PhD Programme Scholarship Fund of ECNU 2005.

摘　　要：We propose a novel scheme to decelerate a cw precooled molecular beam by using an optical Stark decelerator, which is composed of a red-detuned cw semi-Gaussian beam. The dynamical process of the optical Stark deceleration for a cw methane molecular beam is studied by Monte Carlo simulations. It is realized that the proposed optical Stark decelerator can be used to continuously slow a cw methane molecular beam with a longitudinal temperature of 30mK, and a maximum reduction in the most probable speed of 0.388m/s （corresponding to a relative change of 9.93%） can be obtained by using a single semi-Gaussian beam with a power of 500W and a maximum central intensity of about 7.96×10^7 W/cm^2.We propose a novel scheme to decelerate a cw precooled molecular beam by using an optical Stark decelerator, which is composed of a red-detuned cw semi-Gaussian beam. The dynamical process of the optical Stark deceleration for a cw methane molecular beam is studied by Monte Carlo simulations. It is realized that the proposed optical Stark decelerator can be used to continuously slow a cw methane molecular beam with a longitudinal temperature of 30mK, and a maximum reduction in the most probable speed of 0.388m/s （corresponding to a relative change of 9.93%） can be obtained by using a single semi-Gaussian beam with a power of 500W and a maximum central intensity of about 7.96×10^7 W/cm^2.

关 键 词：MIRROR 

分 类 号：O43[机械工程—光学工程]