中国物理B ›› 2014, Vol. 23 ›› Issue (5): 54103-054103.doi: 10.1088/1674-1056/23/5/054103

• ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS • 上一篇    下一篇

The polarization effect of a laser in multiphoton Compton scattering

梁国华, 吕清正, 滕爱萍, 李英骏   

  1. State Key Laboratory for Geomechanics and Deep Underground Engineer, China University of Mining and Technology, Beijing 100083, China
  • 收稿日期:2013-08-23 修回日期:2013-10-09 出版日期:2014-05-15 发布日期:2014-05-15
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant No. 11374360) and the National Basic Research Program of China (Grant No. 2013CBA01504).

The polarization effect of a laser in multiphoton Compton scattering

Liang Guo-Hua (梁国华), Lü Qing-Zheng (吕清正), Teng Ai-Ping (滕爱萍), Li Ying-Jun (李英骏)   

  1. State Key Laboratory for Geomechanics and Deep Underground Engineer, China University of Mining and Technology, Beijing 100083, China
  • Received:2013-08-23 Revised:2013-10-09 Online:2014-05-15 Published:2014-05-15
  • Contact: Liang Guo-Hua, Li Ying-Jun E-mail:xiaolianghmq@gmail.com;lyj@aphy.iphy.ac.cn
  • About author:41.60.-m; 52.25.Os
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No. 11374360) and the National Basic Research Program of China (Grant No. 2013CBA01504).

摘要: The multiphoton Compton scattering in a high-intensity laser beam is studied by using the laser-dressed quantum electrodynamics (QED) method, which is a non-perturbative theory for the interaction between a plane electromagnetic field and a charged particle. In order to analyze in the real experimental condition, a Lorentz transformation for the cross section of this process is derived between the laboratory frame and the initial rest frame of electrons. The energy of the scattered photon is analyzed, as well as the cross sections for different laser intensities and polarizations and different electron velocities. The angular distribution of the emitted photon is investigated in a special velocity of the electron, in which for a fixed number of absorbed photons, the electron energy will not change after the scattering in the lab frame. We obtain the conclusion that higher laser intensities suppress few-laser-photon absorption and enhance more-laser-photon absorption. A comparison between different polarizations is also made, and we find that the linearly polarized laser is more suitable to generate nonlinear Compton scattering.

关键词: multiphoton Compton scattering, laser-dressed quantum electrodynamics (QED), cross section, polarization

Abstract: The multiphoton Compton scattering in a high-intensity laser beam is studied by using the laser-dressed quantum electrodynamics (QED) method, which is a non-perturbative theory for the interaction between a plane electromagnetic field and a charged particle. In order to analyze in the real experimental condition, a Lorentz transformation for the cross section of this process is derived between the laboratory frame and the initial rest frame of electrons. The energy of the scattered photon is analyzed, as well as the cross sections for different laser intensities and polarizations and different electron velocities. The angular distribution of the emitted photon is investigated in a special velocity of the electron, in which for a fixed number of absorbed photons, the electron energy will not change after the scattering in the lab frame. We obtain the conclusion that higher laser intensities suppress few-laser-photon absorption and enhance more-laser-photon absorption. A comparison between different polarizations is also made, and we find that the linearly polarized laser is more suitable to generate nonlinear Compton scattering.

Key words: multiphoton Compton scattering, laser-dressed quantum electrodynamics (QED), cross section, polarization

中图分类号:  (Radiation by moving charges)

  • 41.60.-m
52.25.Os (Emission, absorption, and scattering of electromagnetic radiation ?)