Chinese Optics Letters, 2016, 14 (3): 030201, Published Online: Aug. 6, 2018
Contribution of multiple electron rescatterings on high-order harmonic generation in the mid-infrared wavelength regime Download: 1016次
020.2649 Strong field laser physics 190.2620 Harmonic generation and mixing 320.2250 Femtosecond phenomena 320.7110 Ultrafast nonlinear optics
Abstract
We theoretically investigate multiple electron rescatterings in high-order harmonic generation with a wide range of driving laser wavelengths. In order to obtain a clear and intuitive insight, the time-frequency analysis of the dipole acceleration calculated by the numerical solution of the time-dependent Schr dinger equation is performed and compared with the classical electron trajectory calculation. The result shows that in the mid-infrared regime, the high-order electron trajectory associated with multiple rescatterings plays a more important role than the usually referred-to “long and “short” electron trajectories. To provide quantitative evidence, the strong-field approximation is used to calculate the yield ratio of the high-order harmonic generation from the first rescattering and the multiple rescatterings.
Xiaolong Yuan, Candong Liu, Pengfei Wei, Zhinan Zeng, Ruxin Li. Contribution of multiple electron rescatterings on high-order harmonic generation in the mid-infrared wavelength regime[J]. Chinese Optics Letters, 2016, 14(3): 030201.