High-harmonic spectroscopy of laser-driven nonadiabatic electron dynamics in the hydrogen molecular ion

M. R. Miller, A. Jaroń-Becker, and A. Becker
Phys. Rev. A 93, 013406 – Published 11 January 2016

Abstract

We theoretically explore a mechanism resulting in a minimum in the high-harmonic spectrum of a hydrogen molecular ion driven at extended internuclear distances by a mid-infrared laser source. Our analysis identifies this minimum to be a signature of the transient localization of the electron upon alternating nuclear centers and is representative of dynamics occurring exclusively at the time of ionization. We further demonstrate the sensitivity of this spectroscopic feature to driving field parameters as well as its robustness to distributions of laser field intensities and internuclear distances. Finally, we show how variations in the nonadiabatic dynamics induced by the ramping driving field can be imaged through changes in the number and locations of minima in the spectra.

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  • Received 14 July 2015

DOI:https://doi.org/10.1103/PhysRevA.93.013406

©2016 American Physical Society

Physics Subject Headings (PhySH)

Atomic, Molecular & Optical

Authors & Affiliations

M. R. Miller, A. Jaroń-Becker, and A. Becker

  • JILA and Department of Physics, University of Colorado, Boulder, Colorado 80309-0440, USA

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Issue

Vol. 93, Iss. 1 — January 2016

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