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Coherent control schemes for the photoionization of neon and helium in the Extreme Ultraviolet spectral region

This work presents a detailed description of how a seeded Free-Electron Laser can be used to perform some coherent-control experiments using the fundamental and second and third harmonics. The flexible design of FERMI provides excellent control of the wavelength, phase, and amplitude of light emitted by the FEL. L.Giannessi  et al. Scientific Reports 8, 7774 (2018)



The seeded Free-Electron Laser (FEL) FERMI is the first source of short-wavelength light possessing the full coherence of optical lasers, together with the extreme power available from FELs. FERMI provides longitudinally coherent radiation in the Extreme Ultraviolet and soft x-ray spectral regions, and therefore opens up wide new fields of investigation in physics. We first propose experiments exploiting this property to provide coherent control of the photoionization of neon and helium, carry out numerical calculations to find optimum experimental parameters, and then describe how these experiments may be realized.


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Giannessi Luca, Allaria Enrico Massimiliano, Prince Kevin Charles, Callegari Carlo, Sansone Giuseppe, Ueda Kiyoshi, Morishita Toru, Liu Chien Nan, Grum-Grzhimailo Alexei, Gryzlova Elena, Douguet Nicolas, Bartschat Klaus. Scientific Reports 8, 7774 (2018) doi: 10.1038/s41598-018-25833-7

Last Updated on Tuesday, 13 October 2020 16:15