中国物理B ›› 2007, Vol. 16 ›› Issue (9): 2731-2736.doi: 10.1088/1009-1963/16/9/039

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Potential fields of merging and splitting filaments in air

鲁欣1, 奚婷婷1, 郝作强1, 张杰1, 马媛媛2, 龚旗煌3   

  1. (1)Laboratory of Optical Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100080, China; (2)Laboratory of Optical Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100080, China；State Key Laboratory for Mesoscopic Physics, Department of Physics, Peking University, Beijing 100871, China; (3)State Key Laboratory for Mesoscopic Physics, Department of Physics, Peking University, Beijing 100871, China
  • 收稿日期:2006-12-11 修回日期:2007-03-14 出版日期:2007-09-20 发布日期:2007-09-20
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant Nos~60621063, 10334110, 10425416, 10634020 and 60478047), the National Key Basic Research Special Foundation of China (Grant No~G1999075206), and the National Hi-Tech ICF Programme.

Potential fields of merging and splitting filaments in air

Ma Yuan-Yuan(马媛媛)a) b), Lu Xin(鲁欣)a), Xi Ting-Ting(奚婷婷)a), Hao Zuo-Qiang(郝作强)a), Gong Qi-Huang(龚旗煌)b), and Zhang Jie(张杰)a)†   

  1. a Laboratory of Optical Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100080, China; b State Key Laboratory for Mesoscopic Physics, Department of Physics, Peking University, Beijing 100871, China
  • Received:2006-12-11 Revised:2007-03-14 Online:2007-09-20 Published:2007-09-20
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant Nos~60621063, 10334110, 10425416, 10634020 and 60478047), the National Key Basic Research Special Foundation of China (Grant No~G1999075206), and the National Hi-Tech ICF Programme.

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摘要： Two interacting light filaments with different initial phases propagating in air are investigated numerically by using a ray tracing method. The evolution of the rays of a filament is governed by a potential field. During propagation, the two potential wells of the two filaments can merge into one or repel each other, depending on the initial phase difference between the two filaments. The study provides a simple description of the interacting filaments.

关键词: potential fields, filaments

Abstract: Two interacting light filaments with different initial phases propagating in air are investigated numerically by using a ray tracing method. The evolution of the rays of a filament is governed by a potential field. During propagation, the two potential wells of the two filaments can merge into one or repel each other, depending on the initial phase difference between the two filaments. The study provides a simple description of the interacting filaments.

Key words: potential fields, filaments

中图分类号:  (Wave fronts and ray tracing)

  • 42.15.Dp
42.60.Rn (Relaxation oscillations and long pulse operation) 42.65.Re (Ultrafast processes; optical pulse generation and pulse compression)