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Electronic wavefunctions probed by all-optical attosecond interferometry
摘要： In photoelectron spectroscopy, the ionized electron wavefunction carries information about the structure of the bound orbital and the ionic potential as well as about the photoionization dynamics. However, retrieving the quantum phase information has been a long-standing challenge. Here, we transfer the electron phase retrieval problem into an optical one by measuring the time-reversed process of photoionization—photo-recombination—in attosecond pulse generation. We demonstrate all-optical interferometry of two independent phase-locked attosecond light sources. This measurement enables us to directly determine the phase shift associated with electron scattering in simple quantum systems such as helium and neon, over a large energy range. Moreover, the strong-field nature of attosecond pulse generation resolves the dipole phase around the Cooper minimum in argon through a single scattering angle. This method may enable the probing of complex orbital phases in molecular systems as well as electron correlations through resonances subject to strong laser fields.
关键词： all-optical interferometry,electron correlations,photoelectron spectroscopy,Cooper minimum,molecular systems,electron scattering,attosecond pulse generation,quantum phase information
更新于2025-09-10 09:29:36
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[IEEE 2018 2nd International Symposium on Multidisciplinary Studies and Innovative Technologies (ISMSIT) - Ankara, Turkey (2018.10.19-2018.10.21)] 2018 2nd International Symposium on Multidisciplinary Studies and Innovative Technologies (ISMSIT) - Relativistic High Harmonic Generation
摘要： In recent advance, laser atom interaction has made significant progress in theoretical and experimental method. This article is devoted to a review of recent relativistic High Harmonic Generation (HHG) and Above Threshold Ionization (ATI) in intense laser field is investigated via the Klein-Gordon equation with ponderomotive approach. Thus, in relativistic effects at higher intensity are discussed within strong field approximation (SFA). Moreover, with this relativistic effect shows the simple representation in harmonic spectrum for Ar8+ ion exposed to 800 nm laser field and will be given current information on how the harmonic spectrum changes and how it will be affected attosecond pulse production in ultra-fast dynamic.
关键词： Attosecond pulse,Multiphoton process,Strong laser field,ATI,Relativistic effect,Ultra-fast Dynamics,HHG
更新于2025-09-04 15:30:14