Strong field ionization tomography with two-color circularly polarized femtosecond laser fields

POSTER

Abstract

Recent experiments using two-color circularly polarized laser fields have demonstrated that high-harmonic generation (HHG), a versatile tabletop source of extreme ultraviolet (EUV) light, can be now extended to from linear to circular polarization. Here we present the first experiments using these uniquely polarized light fields to study strong field ionization (SFI), which is the complementary process to HHG. Using a velocity map imaging photoelectron spectroscopy and tomographic reconstruction techniques, we identify low-energy structures in the 3D photoelectron angular distributions that correspond to the rescattering of electrons with the ion. The observation of rescattering structures confirms the proposed explanation for HHG under two-color fields and paves the way for next-generation spectroscopies to investigate molecular structure.

Authors

  • Maithreyi Gopalakrishnan

    JILA and Department of Physics, University of Colorado Boulder and NIST

  • Chris Mancuso

    JILA and Department of Physics, University of Colorado Boulder and NIST

  • Daniel Hickstein

    JILA and Department of Physics, University of Colorado Boulder and NIST

  • Patrick Grychtol

    JILA, University of Colorado, Boulder, CO 80309, JILA and Department of Physics, University of Colorado Boulder and NIST, JILA, University of Colorado, Boulder, CO 80309, USA

  • Ronny Knut

    Uppsala University - Sweden, National Institute of Standards and Technology, JILA and Department of Physics, University of Colorado Boulder and NIST

  • Franklin Dollar

    JILA and Department of Physics, University of Colorado Boulder and NIST

  • Dmitriy Zusin

    JILA, University of Colorado, Boulder, CO 80309, JILA and Department of Physics, University of Colorado Boulder and NIST

  • Christian Gentry

    JILA, University of Colorado, Boulder, CO 80309, JILA and Department of Physics, University of Colorado Boulder and NIST

  • Emrah Turgut

    JILA and Department of Physics, University of Colorado Boulder and NIST

  • Jennifer Ellis

    JILA and Department of Physics, University of Colorado Boulder and NIST

  • Henry Kapteyn

    JILA and Department of Physics, University of Colorado Boulder and NIST

  • Margaret Murnane

    JILA and Department of Physics, University of Colorado Boulder and NIST

  • Ofer Kfir

    Solid State Institute and Physics Department, Technion

  • Oren Cohen

    Solid State Institute and Physics Department, Technion

  • Avner Fleischer

    Solid State Institute and Physics Department, Technion and Department of Physics and Optical Engineering, Ort Braude College

  • Xiao-Min Tong

    Division of Material Science, Faculty of Pure and Applied Science, University of Tsukuba

  • Ming-Chang Chen

    Institute of Photonics Technologies, National Tsing Hua University