| 引用本文格式: Gao Feng-Yun,Feng Li-Qiang,An Rong-Hua,Liu Hang. Generation of isolated attosecond pulse through controlling the harmonic cutoff using three-color laser pulses [J]. J. At. Mol. Phys., 2026, 43: 044001 (in Chinese) [高枫昀,冯立强,安蓉烨,刘航. 利用三束激光调控谐波截止能量来产生孤立阿秒脉冲 [J]. 原子与分子物理学报, 2026, 43(4): 044001] |
| |
| 利用三束激光调控谐波截止能量来产生孤立阿秒脉冲 |
| Generation of isolated attosecond pulse through controlling the harmonic cutoff using three-color laser pulses |
| 摘要点击 522 全文点击 224 投稿时间：2024-12-09 修订日期：2024-12-27 |
| 查看全文 查看/发表评论 |
| DOI编号
10.19855/j.1000-0364.2026.044001 |
| 中文关键词
高次谐波 孤立阿秒脉冲 三色激光场 激光参数 |
| 英文关键词
High-order harmonic generation Isolated attosecond pulse Three-color laser field Laser parameters |
| 基金项目
省市自然科学基金 |
|
|
| 中文摘要
|
| 通过数值求解激光场下的薛定谔方程，本文研究了三色激光组合场各个激光参数对谐波截止能量的影响。具体来说，(1)增大长波长激光光强时，谐波截止能量和谐波平台区都有增大；尤其当同时增大两束长波长激光光强时，可以获得1个能量宽度在394 eV的谐波平台区。但增大短波长激光光强时，谐波光谱变化不明显。(2)增大激光相位时，谐波截止能量和谐波平台区都减小。(3)激光脉宽对谐波光谱影响很小。最后，在最佳谐波光谱上选择适当叠加谐波可获得1个脉宽在41 as的孤立阿秒脉冲。 |
| 英文摘要
|
| Through numerically solving the time-dependent-schr?dinger equation under the laser field, the laser parameter effects of three-color field on the harmonic cutoff energy and the harmonic plateau are studied. Specifically, (1) with the increase of the laser intensity of long-wavelength laser pulse, both the harmonic cutoff energy and the harmonic plateau are increased. Especially, when the intensities of two long-wavelength lasers are increased at the same time, a harmonic plateau with an energy width of 394 eV can be obtained. However, the changes of harmonic spectra are not very obvious when the short-wavelength laser intensity is increased. (2) When the laser phase is increased, the harmonic cutoff energy and the plateau are reduced. (3) The effects of the laser pulse duration on the harmonic spectra are very small. Finally, an isolated pulse with the duration of 41 as can be obtained by properly selecting some harmonics on the optimal harmonic spectrum. |
