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Title: Precise Access to the Molecular-Frame Complex Recombination Dipole through High-Harmonic Spectroscopy

Journal Article · · Physical Review Letters
 [1];  [1];  [2];  [3];  [1];  [1]
  1. The Ohio State Univ., Columbus, OH (United States). Dept. of Physics
  2. Alternative Energies and Atomic Energy Commission (CEA), Saclay (France). Interactions, Dynamics and Lasers Lab. (LIDYL)
  3. Texas A & M Univ., College Station, TX (United States). Dept. of Chemistry

In this paper, we report on spectral intensity and group delay measurements of the highest-occupied molecular-orbital (HOMO) recombination dipole moment of $${\mathrm{N}}_{2}$$ in the molecular-frame using high harmonic spectroscopy. We take advantage of the long-wavelength $$1.3\text{ }\text{ }{\mu}\mathrm{m}$$ driving laser to isolate the HOMO in the near threshold region, 19–67 eV. Finally, the precision of our group delay measurements reveals previously unseen angle-resolved spectral features associated with autoionizing resonances, and allows quantitative comparison with cutting-edge correlated 8-channel photoionization dipole moment calculations.

Research Organization:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES); National Center for Scientific Research (CNRS) International Project of Scientific Cooperation (PICS) (France)
Grant/Contract Number:
FG02-04ER15614; FG02-06ER15833; 5460
OSTI ID:
1461115
Alternate ID(s):
OSTI ID: 1341314
Journal Information:
Physical Review Letters, Vol. 118, Issue 3; ISSN 0031-9007
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 14 works
Citation information provided by
Web of Science

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Cited By (3)

Attosecond imaging of molecules using high harmonic spectroscopy journal January 2019
Probing the interplay between geometric and electronic-structure features via high-harmonic spectroscopy journal May 2019
Resonantly-initiated quantum trajectories and their role in the generation of near-threshold harmonics journal February 2018