Strong-field electron tunnelling dynamics in atomic hydrogen

ORAL

Abstract

An atom in the presence an ultra-short pulse of light can significantly distort the binding potential and it is possible for an electron to tunnel though the atomic binding potential. The 'Attoclock' technique, proposed by [Nat.Phys \textbf{4}, 565 (2008)] has facilitated the experimental measurements of tunnelling dynamics, such as tunneling time of an electron through the binding atomic potential. Previous attoclock experiments hinted at zero-tunnelling delays, however, exact theoretical solutions were not available to study the ionization dynamics in detail. Atomic Hydrogen (H) is the simplest atomic system and can be solved exactly using 3D-TDSE. We use the attoclock technique to investigate tunnelling dynamics with H using COLTRIMS and 770nm, 6fs pulses at intensities from 0.165-0.39 PW/cm$^{\mathrm{2}}$. We compare these results with the full solution of 3D-TDSE.

–

Authors

  • Robert Sang

    Australian Attosecond Science facility, Centre for Quantum Dynamics, Griffith University, Nathan, QLD 4111, Australia

  • U.Satya Sainadh

    Australian Attosecond Science facility, Centre for Quantum Dynamics, Griffith University, Nathan, QLD 4111, Australia

  • Han Xu

    Australian Attosecond Science facility, Centre for Quantum Dynamics, Griffith University, Nathan, QLD 4111, Australia

  • Atia-Tul Noor

    Australian Attosecond Science facility, Centre for Quantum Dynamics, Griffith University, Nathan, QLD 4111, Australia

  • William Wallace

    Australian Attosecond Science facility, Centre for Quantum Dynamics, Griffith University, Nathan, QLD 4111, Australia

  • Xiaoshan Wang

    School of Nuclear Science \& Technology, Lanzhou University, Lanzhou, 730000, China

  • Anatoli Kheifets

    Research School of Physical Sciences and Engineering, The Australian National University, Canberra, ACT 0200, Australia

  • Igor Ivanov

    Centre for Relativistic Laser Science, Institute for Basic Science, Gwangju 500-712 Republic of Korea

  • Klaus Bartschat

    Department of Physics and Astronomy, Drake University, Des Moines, Iowa, 50311, USA

  • Nicolas Douguet

    Department of Physics and Astronomy, Drake University, Des Moines, Iowa, 50311, USA, Drake Univ, Drake University

  • Igor Litvinyuk

    Australian Attosecond Science facility, Centre for Quantum Dynamics, Griffith University, Nathan, QLD 4111, Australia