Femtosecond spectroscopy with vacuum ultraviolet pulse pairs.
Femtosecond spectroscopy with vacuum ultraviolet pulse pairs.
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具有真空紫外脉冲对的飞秒光谱。
DOI：
10.1364/ol.35.003664
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发表时间：
2010
期刊：
影响因子：
3.6
通讯作者：
A. Belkacem
中科院分区：
文献类型：
--
作者：
T. Allison;T. Wright;A. Stooke;C. Khurmi;J. van Tilborg;Y. Liu;R. Falcone;A. Belkacem
我们利用联合收割机将不同波长的高次谐波光源与可变延迟的分镜干涉仪的焦点相结合，对气相分子进行泵浦-探测实验。我们报告了在该装置焦点处的时间分辨率（<44 fs）和空间轮廓（4 μm × 12 μm）的测量结果。我们证明了这种双色，高次谐波技术的效用，通过时间分辨分子氢消除从C（2）H（4）激发到其吸收带在161 nm。
We combine different wavelengths from an intense high-order harmonics source with variable delay at the focus of a split-mirror interferometer to conduct pump-probe experiments on gas-phase molecules. We report measurements of the time resolution (<44 fs) and spatial profiles (4 μm × 12 μm) at the focus of the apparatus. We demonstrate the utility of this two-color, high-order-harmonic technique by time resolving molecular hydrogen elimination from C(2)H(4) excited into its absorption band at 161 nm.