Nonadiabatic tunnel ionization : looking inside a laser cycle

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DOIResolve DOI: http://doi.org/10.1103/PhysRevA.64.013409
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TypeArticle
Journal titlePhysical Review A
Volume64
Issue1
Article number013409
AbstractWe obtain a simple closed-form analytical expression for ionization rate as a function of instantaneous laser phase ?(t), for arbitrary values of the Keldysh parameter ?, within the usual strong-field approximation. Our analysis allows us to explicitly distinguish multiphoton and tunneling contributions to the total ionization probability. The range of intermediate ??1, which is typical for most current intense field experiments, is the regime of nonadiabatic tunneling. In this regime, the instantaneous laser phase dependence differs dramatically from both quasistatic tunneling and multiphoton limits. For cycle-averaged rates, our results reproduce standard Keldysh-like expressions.
Publication date
PublisherAmerican Physical Society
LanguageEnglish
AffiliationNational Research Council Canada; NRC Steacie Institute for Molecular Sciences
Peer reviewedYes
NPARC number12328659
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Record identifier6ff0d329-9bfd-4f5a-ae41-a086a58611f5
Record created2009-09-10
Record modified2016-05-09
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