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Author: Mairesse, Yann × WGL Institute: MBI ×

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    Multidimensional high harmonic spectroscopy of polyatomic molecules: detecting sub-cycle laser-driven hole dynamics upon ionization in strong mid-IR laser fields
    (Cambridge [u.a.] : Soc., 2016) Bruner, Barry D.; Mašín, Zdeněk; Negro, Matteo; Morales, Felipe; Brambila, Danilo; Devetta, Michele; Faccialà, Davide; Harvey, Alex G.; Ivanov, Misha; Mairesse, Yann; Patchkovskii, Serguei; Serbinenko, Valeria; Soifer, Hadas; Stagira, Salvatore; Vozzi, Caterina; Dudovich, Nirit; Smirnova, Olga
    High harmonic generation (HHG) spectroscopy has opened up a new frontier in ultrafast science, where electronic dynamics can be measured on an attosecond time scale. The strong laser field that triggers the high harmonic response also opens multiple quantum pathways for multielectron dynamics in molecules, resulting in a complex process of multielectron rearrangement during ionization. Using combined experimental and theoretical approaches, we show how multi-dimensional HHG spectroscopy can be used to detect and follow electronic dynamics of core rearrangement on sub-laser cycle time scales. We detect the signatures of laser-driven hole dynamics upon ionization and reconstruct the relative phases and amplitudes for relevant ionization channels in a CO2 molecule on a sub-cycle time scale. Reconstruction of channel-resolved complex ionization amplitudes on attosecond time scales has been a long-standing goal of high harmonic spectroscopy. Our study brings us one step closer to fulfilling this initial promise and developing robust schemes for sub-femtosecond imaging of multielectron rearrangement in complex molecular systems.
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    Roadmap on photonic, electronic and atomic collision physics: I. Light-matter interaction
    (Bristol : IOP Publ., 2019) Ueda, Kiyoshi; Sokell, Emma; Schippers, Stefan; Aumayr, Friedrich; Sadeghpour, Hossein; Burgdörfer, Joachim; Lemell, Christoph; Tong, Xiao-Min; Pfeifer, Thomas; Calegari, Francesca; Palacios, Alicia; Martin, Fernando; Corkum, Paul; Sansone, Giuseppe; Gryzlova, Elena V.; Grum-Grzhimailo, Alexei N.; Piancastelli, Maria Novella; Weber, Peter M.; Steinle, Tobias; Amini, Kasra; Biegert, Jens; Berrah, Nora; Kukk, Edwin; Santra, Robin; Müller, Alfred; Dowek, Danielle; Lucchese, Robert R.; McCurdy, C. William; Bolognesi, Paola; Avaldi, Lorenzo; Jahnke, Till; Schöffler, Markus S.; Dörner, Reinhard; Mairesse, Yann; Nahon, Laurent; Smirnova, Olga; Schlathölter, Thomas; Campbell, Eleanor E.B.; Rost, Jan-Michael; Meyer, Michael; Tanaka, Kazuo A.
    We publish three Roadmaps on photonic, electronic and atomic collision physics in order to celebrate the 60th anniversary of the ICPEAC conference. In Roadmap I, we focus on the light-matter interaction. In this area, studies of ultrafast electronic and molecular dynamics have been rapidly growing, with the advent of new light sources such as attosecond lasers and x-ray free electron lasers. In parallel, experiments with established synchrotron radiation sources and femtosecond lasers using cutting-edge detection schemes are revealing new scientific insights that have never been exploited. Relevant theories are also being rapidly developed. Target samples for photon-impact experiments are expanding from atoms and small molecules to complex systems such as biomolecules, fullerene, clusters and solids. This Roadmap aims to look back along the road, explaining the development of these fields, and look forward, collecting contributions from twenty leading groups from the field. © 2019 IOP Publishing Ltd.