Lateral shearing interferometry of high-harmonic wavefronts
Lateral shearing interferometry of high-harmonic wavefronts
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DOI：
10.1364/ol.36.001746
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发表时间：
2011-05-15
期刊：
影响因子：
3.6
通讯作者：
Walmsley, Ian A.
中科院分区：
文献类型：
--
作者：
Austin, Dane R.;Witting, Tobias;Walmsley, Ian A.
提出了一种基于横向剪切干涉的高次谐波频率分辨波前表征技术。驱动激光脉冲的倾斜复制品由马赫-曾德尔干涉仪产生，在目标中产生单独的焦点。在平场极紫外光谱仪上产生的谐波的干涉产生空间相位导数。一套全面的空间配置文件，解决了谐波阶，验证了技术，并揭示了单原子和宏观效应的相互作用。(C)2011年美国光学学会
We present a technique for frequency-resolved wavefront characterization of high harmonics based on lateral shearing interferometry. Tilted replicas of the driving laser pulse are produced by a Mach-Zehnder interferometer, producing separate focii in the target. The interference of the resulting harmonics on a flat-field extreme ultraviolet spectrometer yields the spatial phase derivative. A comprehensive set of spatial profiles, resolved by harmonic order, validate the technique and reveal the interplay of single-atom and macroscopic effects. (C) 2011 Optical Society of America