中国物理B ›› 2002, Vol. 11 ›› Issue (2): 126-131.doi: 10.1088/1009-1963/11/2/305

• ATOMIC AND MOLECULAR PHYSICS • 上一篇    下一篇

Study on optical electron polarimeter and measurement of the relative Stokes parameters of weak light

阮存军, 庞文宁, 高君芳, 尚仁成   

  1. Laboratory of Polarization Physics, Department of Physics, Tsinghua University, Beijing 100084, China
  • 收稿日期:2001-05-05 修回日期:2001-10-12 出版日期:2005-06-13 发布日期:2005-06-13
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant No. 19874037).

Study on optical electron polarimeter and measurement of the relative Stokes parameters of weak light

Ruan Cun-Jun (阮存军), Pang Wen-Ning (庞文宁), Gao Jun-Fang (高君芳), Shang Ren-Cheng (尚仁成)   

  1. Laboratory of Polarization Physics, Department of Physics, Tsinghua University, Beijing 100084, China
  • Received:2001-05-05 Revised:2001-10-12 Online:2005-06-13 Published:2005-06-13
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No. 19874037).

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摘要： In this paper, we present the research on an optical electron polarimeter, which is used to determine the polarization of an incident electron beam by measuring the relative Stokes parameters of the fluorescence emitted from the He gas following the impact excitation with the electron beam. The fundamental theory of the optical electron polarimeter is discussed with the 33P→23S transition of He. The structure and performance of the instrument are described, which are different in some aspects from previous works. The arrangement of the experiment for measuring the relative Stokes parameters of linearly polarized weak light is also investigated, which actually involves the same processes as the polarization measurement with the incident electron beam. The results obtained are in agreement with the theoretical prediction.

Abstract: In this paper, we present the research on an optical electron polarimeter, which is used to determine the polarization of an incident electron beam by measuring the relative Stokes parameters of the fluorescence emitted from the He gas following the impact excitation with the electron beam. The fundamental theory of the optical electron polarimeter is discussed with the 33P→23S transition of He. The structure and performance of the instrument are described, which are different in some aspects from previous works. The arrangement of the experiment for measuring the relative Stokes parameters of linearly polarized weak light is also investigated, which actually involves the same processes as the polarization measurement with the incident electron beam. The results obtained are in agreement with the theoretical prediction.

Key words: impact excitation, polarization, optical electron polarimeter, relative Stokes parameters

中图分类号:  (Polarimeters and ellipsometers)

  • 07.60.Fs
34.80.Dp (Atomic excitation and ionization)