Optimization of High-Order Harmonic by Genetic Algorithm for the Chirp and Phase of Few-Cycle Pulses
XIAO Jun1, SUN Zhen-Rong1, WANG Yu-Feng1, DENG Li1, ZHANG Xiang-Yun1, CHEN Guo-Liang1, ZHANG Wei-Ping1, WANG Zu-Geng1, XU Zhi-Zhan1, LI Ru-Xin1
1Key Laboratory of Optical and Magnetic Resonance Spectroscopy, Department of Physics, and Department of Mathematics, East China Normal University, Shanghai 200062
1Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800
Optimization of High-Order Harmonic by Genetic Algorithm for the Chirp and Phase of Few-Cycle Pulses
1Key Laboratory of Optical and Magnetic Resonance Spectroscopy, Department of Physics, and Department of Mathematics, East China Normal University, Shanghai 200062
1Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800
Abstract： The brightness of a particular harmonic order is optimized for the chirp and initial phase of the laser pulse by genetic algorithm. The influences of the chirp and initial phase of the excitation pulse on
the harmonic spectra are discussed in terms of the semi-classical model including the propagation effects. The results indicate that the harmonic intensity and cutoff have strong dependence on the chirp of the laser pulse, but slightly on its initial phase. The high-order harmonics can be enhanced by the optimal laser pulse and its cutoff can be tuned by optimization of the chirp and initial phase of the laser pulse.
XIAO Jun;SUN Zhen-Rong;WANG Yu-Feng;DENG Li;ZHANG Xiang-Yun;CHEN Guo-Liang;ZHANG Wei-Ping;WANG Zu-Geng;XU Zhi-Zhan;LI Ru-Xin. Optimization of High-Order Harmonic by Genetic Algorithm for the Chirp and Phase of Few-Cycle Pulses[J]. 中国物理快报, 2005, 22(4): 873-876.
XIAO Jun, SUN Zhen-Rong, WANG Yu-Feng, DENG Li, ZHANG Xiang-Yun, CHEN Guo-Liang, ZHANG Wei-Ping, WANG Zu-Geng, XU Zhi-Zhan, LI Ru-Xin. Optimization of High-Order Harmonic by Genetic Algorithm for the Chirp and Phase of Few-Cycle Pulses. Chin. Phys. Lett., 2005, 22(4): 873-876.
2005, Vol. 22 
