High-Order Harmonic Generation by Two Non-collinear Coherent Femtosecond Laser Pulses
LU Wei-Xin, LIU Ting-Ting, YANG Hong, SUN Tao-Heng, GONG Qi-Huang
State Key Laboratory for Mesoscopic Physics and Department of
Physics, Peking University, Beijing 100871
High-Order Harmonic Generation by Two Non-collinear Coherent Femtosecond Laser Pulses
LU Wei-Xin;LIU Ting-Ting;YANG Hong;SUN Tao-Heng;GONG Qi-Huang
State Key Laboratory for Mesoscopic Physics and Department of
Physics, Peking University, Beijing 100871
关键词 ：
42.65.Ky ,
42.65.Re ,
33.80.Rv
Abstract ： We have studied the high-order harmonic generated by two coherent pulses in argon gas produced by a gas jet. A loop in the relationship of the harmonic intensity versus the absolute values of relative phase difference was observed for non-collinear arrangement. Compared with the collinear arrangement, increase of 10 times of the conversion efficiency for 17th-order harmonic generation at an appropriate relative phase difference was obtained. The calculation of the intensity and phase for the laser field near the focus gives a simple reason for these phenomena.
Key words ：
42.65.Ky
42.65.Re
33.80.Rv
出版日期: 2003-06-01
:
42.65.Ky
(Frequency conversion; harmonic generation, including higher-order harmonic generation)
42.65.Re
(Ultrafast processes; optical pulse generation and pulse compression)
33.80.Rv
(Multiphoton ionization and excitation to highly excited states (e.g., Rydberg states))
引用本文:
LU Wei-Xin;LIU Ting-Ting;YANG Hong;SUN Tao-Heng;GONG Qi-Huang. High-Order Harmonic Generation by Two Non-collinear Coherent Femtosecond Laser Pulses[J]. 中国物理快报, 2003, 20(6): 848-851.
链接本文:
https://cpl.iphy.ac.cn/CN/
或
https://cpl.iphy.ac.cn/CN/Y2003/V20/I6/848
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