中国物理B ›› 2003, Vol. 12 ›› Issue (2): 169-173.doi: 10.1088/1009-1963/12/2/309

• CLASSICAL AREAS OF PHENOMENOLOGY • 上一篇    下一篇

A theoretical study about the chirped pulse amplification laser

卢兴强, 范滇元   

  1. State Key Laboratory on High Power Laser and Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China
  • 收稿日期:2002-06-21 修回日期:2002-08-14 出版日期:2005-03-16 发布日期:2005-03-16
  • 基金资助:
    Project supported by the National High Technology Inertial Confinement Fusion Foundation of China (Grant No 863-804-5).

A theoretical study about the chirped pulse amplification laser

Lu Xing-Qiang (卢兴强), Fan Dian-Yuan (范滇元)   

  1. State Key Laboratory on High Power Laser and Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China
  • Received:2002-06-21 Revised:2002-08-14 Online:2005-03-16 Published:2005-03-16
  • Supported by:
    Project supported by the National High Technology Inertial Confinement Fusion Foundation of China (Grant No 863-804-5).

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摘要： Starting from the Maxwell's equation, and using the resonant-dipole equation together with the multilevel rate equations which take the effects of energy relaxation into consideration, we have derived a more realistic numerical model of the chirped pulse amplification for an ultra-broad band width laser amplifier. Numerical simulations of this model show that both the intensity profile and the energy fluence of the amplified chirped pulse are closely connected with the two relaxation effects: the relaxation of the thermalization among the components of the laser multiplets and the depletion of the lower laser level. The results are valuable for the design of ultra-broad bandwidth chirped pulse amplification lasers.

Abstract: Starting from the Maxwell's equation, and using the resonant-dipole equation together with the multilevel rate equations which take the effects of energy relaxation into consideration, we have derived a more realistic numerical model of the chirped pulse amplification for an ultra-broad band width laser amplifier. Numerical simulations of this model show that both the intensity profile and the energy fluence of the amplified chirped pulse are closely connected with the two relaxation effects: the relaxation of the thermalization among the components of the laser multiplets and the depletion of the lower laser level. The results are valuable for the design of ultra-broad bandwidth chirped pulse amplification lasers.

Key words: chirped pulse amplification, Maxwell's equation, relaxation of energy level

中图分类号:  (Modulation, tuning, and mode locking)

  • 42.60.Fc
42.65.Re (Ultrafast processes; optical pulse generation and pulse compression) 42.60.Da (Resonators, cavities, amplifiers, arrays, and rings) 03.50.De (Classical electromagnetism, Maxwell equations) 02.60.Cb (Numerical simulation; solution of equations)