| 引用本文格式: Wang Yu-Ning,Zhan Song-Ting,Liu Yang,Feng Li-Qiang,Liu Hang. Waveform optimization of 3-color field to increase the harmonic cutoff energy and intensity in the presence of superposition state [J]. J. At. Mol. Phys., 2022, 39: 045001 (in Chinese) [王语凝,詹淞婷,刘扬,冯立强,刘航. 叠加态下3色场波形优化增大谐波辐射截止能量及强度 [J]. 原子与分子物理学报, 2022, 39: 045001] |
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| 叠加态下3色场波形优化增大谐波辐射截止能量及强度 |
| Waveform optimization of 3-color field to increase the harmonic cutoff energy and intensity in the presence of superposition state |
| 摘要点击 53 全文点击 9 投稿时间：2021-07-16 修订日期：2021-08-05 |
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| DOI编号
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| 中文关键词
高次谐波 叠加态模型 3色场波形优化 孤立阿秒脉冲 |
| 英文关键词
High-order harmonic generation Superposition state model Waveform optimization of 3-color field Isolated attosecond pulse |
| 基金项目
省市自然科学基金 |
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| 中文摘要
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| 在He+离子1s态和2s态的叠加态作为初始态时，提出一种优化3束激光场来增大谐波截止能量和强度的方法。结果表明：在叠加初始态下，谐波强度要比基态初始态下增强3个数量级以上。随后，在3色场波形优化下，谐波截止能量又得到增大，进而获得一个高强度、高光子能量的谐波光谱连续区。通过叠加光谱连续区上最后100次的谐波可以获得一个27 as的孤立阿秒脉冲。 |
| 英文摘要
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| When the superposition state of 1s and 2s states of He+ ion is the initial state, a method of optimizing 3-color laser field to increase the harmonic cutoff energy and intensity is proposed. The results show that in the superposition initial state, the harmonic intensity is more than 3 orders of magnitude stronger than that in the ground initial state case. Further, the harmonic cutoff energy can be increased by optimizing 3-color laser waveform, showing a harmonic spectrum continuous region with the high-intensity and high photon energy. By superposing the last 100 harmonics in the spectral continuum, an isolated attosecond pulse of 27 as can be obtained. |
