| Optimization of High-Order Harmonic by Genetic Algorithm for the Chirp and Phase of Few-Cycle Pulses |
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| 作者姓名： | 萧珺 孙真荣 王玉峰 邓莉 张向韵 陈果良 张卫平 王祖赓 徐至展 李儒新 |
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| 作者单位： | [1]KeyLaboratoryofOpticalandMagneticResonanceSpectroscopy,DepartmentofPhysics,andDepartmentofMathematics,EastChinaNormalUniversity,Shanghai200062 [2]ShanghaiInstituteofOpticsandFineMechanics,ChineseAcademyofSciences,Shanghai201800 |
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| 摘 要： | 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.
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| 关 键 词： | 高界谐函数 基因算法 线性调频脉冲 相位循环 电磁波 |
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