Quasi-phasematching of harmonic generation via multimode beating in waveguides.
Quasi-phasematching of harmonic generation via multimode beating in waveguides.
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DOI：
10.1364/oe.15.007894
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发表时间：
2007-02
期刊：
影响因子：
3.8
通讯作者：
B. Dromey;M. Zepf;M. Landreman;S. Hooker
中科院分区：
文献类型：
--
作者：
B. Dromey;M. Zepf;M. Landreman;S. Hooker
提出了一种气体中准相位匹配高次谐波产生的新方案。在这方面，由波导的多于一个模式的激励引起的轴向强度的快速变化用于实现准相位匹配。数值模拟表明谐波信号的增强超过了单个相干长度所实现的谐波信号的增强因子>10（4）。
A new scheme for quasi-phasematching high harmonic generation (HHG) in gases is proposed. In this, the rapid variation of the axial intensity resulting from excitation of more than one mode of a waveguide is used to achieve quasi phasematching. Numerical modeling demonstrates enhancement of the harmonic signal over that achieved for a single coherence length by factors >10(4).