Control of high-order harmonic emission using attosecond pulse trains
Control of high-order harmonic emission using attosecond pulse trains
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DOI：
10.1080/09500340500167669
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发表时间：
2006-01
影响因子：
1.3
通讯作者：
J. Biegert;A. Heinrich;C. Hauri;W. Kornelis;P. Schlup;M. Anscombe;M. Gaarde;K. Schafer;U. Keller
中科院分区：
文献类型：
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作者：
J. Biegert;A. Heinrich;C. Hauri;W. Kornelis;P. Schlup;M. Anscombe;M. Gaarde;K. Schafer;U. Keller
我们证明阿秒脉冲序列是控制强场过程（例如高次谐波产生）的天然工具。通过将阿秒脉冲串与红外驱动场相结合，我们预测并通过实验证实了光子能量在 90 eV 左右时谐波产量的增强和光谱变窄。使用阿秒脉冲序列作为谐波产生过程的种子，用单光子电离步骤取代了隧道电离，因此可以在单原子水平上操纵高阶谐波产生的时频特性。
We show that attosecond pulse trains are a natural tool to control strong field processes such as high-order harmonic generation. Coherently combining an attosecond pulse train with an IR driving field, we predict and experimentally confirm enhancement and spectral narrowing of the harmonic yield at photon energies around 90 eV. The use of an attosecond pulse train to seed the harmonic generation process replaces tunneling ionization with a single-photon ionization step, therefore permitting the manipulation of the time–frequency properties of high-order harmonic generation already at the single-atom level.