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The absorption of a single XUV photon by a complex molecule such as a PAH (Polycyclic Aromatic Hydrocarbons) can induce diverse mechanisms that can take place in a broad variety of timescales starting from the attosecond one [1], Nowadays the development of the high harmonic generation (HHG) technology allows synthesizing light pulses in the VUV-XUV spectral range, with duration down to a few tens...
We developed a compact XUV beamline based on High order Harmonic Generation in gases (HHG) that can be used both for time resolved studies with broadband XUV pulses and for spectrally resolved studies where individual harmonics are selected. The beamline operates with a commercial femtosecond laser system at 5 kHz and it is coupled to a velocity map imaging (VMI) spectrometer operating with a high...
We study the far field spatial profiles of high order harmonics generated in gases with a high spectral resolution. It allows us to observe simultaneously several harmonics under diverse conditions including single shot imaging with spatio-spectral resolution at low and high intensities. This study gives access to the origin of the spatiospectral coupling appearing in the far field spatially resolved...
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