论文标题
在稀有气体中产生的极端紫外脉冲序列的相位循环
Phase cycling of extreme ultraviolet pulse sequences generated in rare gases
论文作者
论文摘要
到目前为止，在这些短波长下出现的实验困难阻碍了极端粉状物质状态（XUV）中相干非线性时域光谱的开发。在这项工作中，我们提出了一种新型的实验方法，该方法促进了罕见气体中谐波产生产生的XUV脉冲序列的时间控制和相位循环。该方法是为窄带宽谐波（$ \ oft14 \，$ eV）的生成和高光谱分辨率表征所证明的。我们的技术同时为非线性信号提供了高相位稳定性和途径选择性检测方案 - 这都是所有类型的连贯非线性光谱的必要先决条件。
The development of schemes for coherent nonlinear time-domain spectroscopy in the extreme-ultraviolet regime (XUV) has so far been impeded by experimental difficulties that arise at these short wavelengths. In this work we present a novel experimental approach, which facilitates the timing control and phase cycling of XUV pulse sequences produced by harmonic generation in rare gases. The method is demonstrated for the generation and high spectral resolution characterization of narrow-bandwidth harmonics ($\approx14\,$eV) in argon and krypton. Our technique simultaneously provides high phase stability and a pathway-selective detection scheme for nonlinear signals - both necessary prerequisites for all types of coherent nonlinear spectroscopy.
