HEAL DSpace

Controllable surfaces of path interference in the multiphoton ionization of atoms by a weak trichromatic field

DSpace/Manakin Repository

Show simple item record

dc.contributor.author Mercouris, T en
dc.contributor.author Nicolaides, CA en
dc.date.accessioned 2014-03-01T11:44:39Z
dc.date.available 2014-03-01T11:44:39Z
dc.date.issued 2005 en
dc.identifier.issn 1464-4266 en
dc.identifier.uri https://dspace.lib.ntua.gr/xmlui/handle/123456789/37066
dc.subject Ab initio calculations en
dc.subject Coherent control en
dc.subject Multiphoton ionization en
dc.subject Photoionization en
dc.subject.classification Optics en
dc.subject.classification Physics, Applied en
dc.subject.other Correlation methods en
dc.subject.other Eigenvalues and eigenfunctions en
dc.subject.other Harmonic analysis en
dc.subject.other Photons en
dc.subject.other Proton irradiation en
dc.subject.other Ab initio calculations en
dc.subject.other Coherent control en
dc.subject.other Many-electron, many-photon theory en
dc.subject.other Multiphoton ionization en
dc.subject.other Photoionization en
dc.title Controllable surfaces of path interference in the multiphoton ionization of atoms by a weak trichromatic field en
heal.type other en
heal.identifier.primary 10.1088/1464-4266/7/10/029 en
heal.identifier.secondary http://dx.doi.org/10.1088/1464-4266/7/10/029 en
heal.language English en
heal.publicationDate 2005 en
heal.abstract Multiphoton detachment rates for the H-1S ground state irradiated by a weak trichromatic ac field consisting of the fundamental frequency ω ≤ 0.272 eV and its second, third or fourth higher harmonics were computed from first principles. The weak intensities are in the range of 107-108 W cm-2. The calculations incorporated systematically electronic structure and electron correlation effects. They were done by implementing a time-independent, nonperturbative many-electron, many-photon theory (MEMPT) which obtains cycle-averaged complex eigenvalues, whose real part gives the field-induced energy shift, Δ, and the imaginary part is the multiphoton ionization rate, Γ. Through analysis, plausible arguments and computation, we show that when the intensities are weak the dependence of Γ on phase differences is simple. Specifically, Γs are depicted in the form of plane surfaces, with minor ripples due to higher order ionization paths, in terms of trigonometric functions of the phase differences. This dependence is likely to be applicable to other atomic systems as well, and to provide a definition of the weak field regime in the trichromatic case. When the field intensities are such that higher order ionization paths become important, these dependences break down and we reach the strong field regime. © 2005 IOP Publishing Ltd. en
heal.publisher IOP PUBLISHING LTD en
heal.journalName Journal of Optics B: Quantum and Semiclassical Optics en
dc.identifier.doi 10.1088/1464-4266/7/10/029 en
dc.identifier.isi ISI:000233439100030 en
dc.identifier.volume 7 en
dc.identifier.issue 10 en
dc.identifier.spage S403 en
dc.identifier.epage S407 en


Files in this item

Files Size Format View

There are no files associated with this item.

This item appears in the following Collection(s)

Show simple item record