Extreme ultraviolet interferometry measurements with high-order harmonics.
Extreme ultraviolet interferometry measurements with high-order harmonics.
复制标题
高次谐波的极紫外干涉测量。
DOI：
10.1364/ol.25.000135
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发表时间：
2000
期刊：
影响因子：
3.6
通讯作者：
T. Hänsch
中科院分区：
文献类型：
--
作者：
D. Descamps;C. Lyngå;J. Norin;A. L’Huillier;C. Wahlström;J. Hergott;H. Merdji;P. Salières;M. Bellini;T. Hänsch
我们证明，气体中短而强的激光脉冲产生的高次谐波为极紫外干涉测量提供了一个有趣的辐射源，因为它们是可调谐的、相干的、脉冲持续时间短且易于操作。 9 次到 15 次谐波用于测量铝层的厚度。 11 次谐波用于确定 300 ps 激光器产生的等离子体的电子密度的空间分布。测量到高于2-10(20)电子/cm>(3)的电子密度。
We demonstrate that high-order harmonics generated by short, intense laser pulses in gases provide an interesting radiation source for extreme ultraviolet interferometry, since they are tunable, coherent, of short pulse duration, and simple to manipulate. Harmonics from the 9th to the 15th are used to measure the thickness of an aluminum layer. The 11th harmonic is used to determine the spatial distribution of the electron density of a plasma produced by a 300-ps laser. Electronic densities higher than 2-10(20)electrons/cm>(3) are measured.