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多周期强激光场中高次谐波选择性增强

更新时间:2019-01-16 00:06:48 大小:2M 上传用户:sun2152查看TA发布的资源 标签:激光场高次谐波选择性增强 下载积分:1分 评价赚积分 (如何评价?) 打赏 收藏 评论(0) 举报

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By using strong-field approximation,we theoretically investigate the selective enhancement of


high-order harmonic generation in a small spectral range driven by a multi-cycle three-color laser


field which is composed of an 800 nm laser pulse,a 1600 nm laser pulse and a 2400 nm laser pulse.


The results show that a narrow-bandwidth spectrum can be selectively enhanced with the inten-


sity increased by nearly one order of magnitude compared to the adjacent harmonics,which can


be attributed to the modified electron trajectories in the three-color field.Furthermore,it is re-


vealed that the central wavelength of the enhanced spectrum can be effectively tuned by changing


the time delay between laser pulses of different colors.


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