| 固定光强下组合啁啾波形优化谐波光谱的研究 |
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| 引用本文： | 敬晓丹,李义,冯立强. 固定光强下组合啁啾波形优化谐波光谱的研究[J]. 激光技术, 2022, 46(6): 823-828. DOI: 10.7510/jgjs.issn.1001-3806.2022.06.018 |
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| 作者姓名： | 敬晓丹 李义 冯立强 |
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| 作者单位： | 辽宁工业大学 理学院, 锦州 121001 |
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| 摘 要： | 为了输出具有高转化效率和高光子能量的谐波光谱, 采用求解薛定谔方程的方法, 理论研究了多色组合啁啾波形对谐波光谱的影响。结果表明, 在固定激光强度下, 最佳三色啁啾波形可以有效延伸谐波截止能量; 最佳四色啁啾波形可以增强谐波强度; 选择最佳三色和四色组合波形下的谐波光谱进行谐波叠加可获得42as的孤立阿秒脉冲。这一结果对超短阿秒脉冲的产生是有帮助。
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| 关 键 词： | 激光光学 高次谐波 组合啁啾波形 阿秒脉冲 |
| 收稿时间： | 2021-09-26 |
Optimization of harmonic spectra by combined chirp waveform under fixed laser intensity |
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| Abstract: | To produce the harmonic spectra with high conversion efficiency and high photon energy, the effect of the multi-color chirp waveform on the harmonic spectra was theoretically studied by solving the Schr?dinger equation. The results show that, under the fixed laser intensity, the harmonic cutoff energy can be effectively extended by the best 3-color chirp waveform. The harmonic intensity can be enhanced by the best 4-color chirp waveform. Finally, the isolated attosecond pulses of 42as can be obtained by superposition of the harmonic spectrum of the best 3-color and 4-color combined waveforms. The results are helpful for the generation of ultra-short attosecond pulses. |
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