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This content will become publicly available on July 16, 2019

Title: Attosecond coherent control of oxygen dissociation by XUV-IR laser fields using three-dimensional momentum imaging

In this paper, we have performed ultrafast three-dimensional ion momentum imaging spectroscopy on the dissociative single ionization of oxygen molecules using attosecond pulse trains with a broad energy spectrum of 5–30 eV. High-resolution momentum imaging allows clear identification of vibrational structures corresponding to the predissociation of highly excited cationic states. By adding a pump infrared field that is synchronized with and polarized orthogonally to the XUV pulse train, and an additional probe IR field, we demonstrate how the yield of O + ions can be steered between different dissociation channels by coherently controlling the coupling between multiple O 2 + * electronic states on an attosecond time scale. Finally, time-dependent calculations in a single active electron approximation allow a qualitative analysis of ion yields for two orientations of the molecular axis.
Authors:
 [1] ;  [2] ;  [3] ;  [4] ;  [4] ;  [4] ;  [4] ;  [4] ;  [4] ;  [4]
  1. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Chemical Sciences Division; Swiss Federal Inst. of Technology in Zurich (ETH Zurich) (Switzerland). Lab. of Physical Chemistry
  2. Goethe Univ. Frankfurt (Germany). Inst. of Nuclear Physics; Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Chemical Sciences Division
  3. Univ. of Tsukuba (Japan). Center for Computational Sciences
  4. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Chemical Sciences Division
Publication Date:
Grant/Contract Number:
AC02-05CH11231; JP16K05
Type:
Accepted Manuscript
Journal Name:
Physical Review A
Additional Journal Information:
Journal Volume: 98; Journal Issue: 1; Journal ID: ISSN 2469-9926
Publisher:
American Physical Society (APS)
Research Org:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Goethe Univ. Frankfurt (Germany); Univ. of Tsukuba (Japan)
Sponsoring Org:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22); German Academic Scholarship Foundation; Japan Society for the Promotion of Science (JSPS)
Country of Publication:
United States
Language:
English
Subject:
74 ATOMIC AND MOLECULAR PHYSICS; coherent control; ultrafast phenomena
OSTI Identifier:
1464170
Alternate Identifier(s):
OSTI ID: 1460483