Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Log inSign up
Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Blog
Job Board
Q3AS

© 2026 Aqora Quantum S.A.S.

TermsPrivacyLegal Notice

Journal of Physics B Atomic and Molecular Physics

Pulse area effects in resonant multiphoton ionisation

Edward J. Robinson

Published Jun 14, 1980• 13 citations
Publisher

Abstract

A theory of resonant multiphoton ionisation by smooth pulses is developed. It is shown that the spectrum of the effect may exhibit structure associated with time domain correlations.
DOI
10.1088/0022-3700/13/11/015

Related papers

Resonant ionisation by smooth laser pulses

D Rogus, Maciej Lewenstein

The authors discuss the multiphoton resonant ionisation of atoms by smooth laser pulses. A number of interesting coherent phenomena, such as multipeak splitting of the photoelectron spectrum are observed and studied for different laser detunings, pulse durations and AC Stark shifts.

Journal of Physics B Atomic and Molecular Physics•Oct 14, 1986•35 citations

Renormalised Perturbation Theory of Resonant Multiphoton Ionisation

K. Unnikrishnan

Perturbation theory of multiphoton ionisation due to a classical electromagnetic field is modified to allow for intermediate resonances with bound states. Complex energies, generally associated with resonances, do not enter into this formalism. For a monochromatic field of frequency u, a constant ionisation rate can then be defined unambiguously and only such continuum states are excited which correspond to the absorption of energy in integral multiples of hu. As an application, differential and total cross sections for the two-photon ionisation of hydrogen, for frequencies below the n = 3 resonance region, are obtained in closed form. Existing data for generalised cross sections, calculated numerically using the complex coordinate method, are in good agreement with the present results. Finally, the mean fractional ionisation resulting from a pulse of finite duration is estimated on the basis of the associated power spectrum. For short pulses, the time dependence of ionisation exhibits a departure from that expected of a time-independent rate.

Australian Journal of Physics•Oct 1, 1995•0 citations

Temporal effects on the amplitude of the resonance peaks in multiphoton ionisation

Yves Gontier, M. Trahin

The variations of the interaction time can modify the amplitude of the resonance peaks in three- and four-photon ionisation of caesium. The predictions of the theory and the experimental data are compared and the agreement is excellent.

Journal of Physics B Atomic and Molecular Physics•Aug 14, 1978•7 citations

Non-monochromatic laser fields and resonant multiphoton ionisation of atoms

Anatoly Viktorovich Masalov, L. Allen, S. S. Todirashku

The structure of the non-monochromatic field correlation function which appears in the theoretical analysis of the resonant multiphoton ionisation of atoms is discussed in the case where the spectral width of the non-monochromatic field exceeds all widths associated with the resonant atomic state. The particular case of non-monochromatic field with Gaussian statistics is analysed.

Journal of Physics B Atomic and Molecular Physics•Aug 14, 1982•2 citations

The role of transients in resonant multiphoton absorption

P. L. Knight

A simple description of the time evolution of interference effects in resonant multiphoton absorption is presented which draws together recent studies of transients and laser coherence in two-photon ionisation.

Journal of Physics B Atomic and Molecular Physics•Aug 14, 1979•8 citations

Photon-correlation effects in resonant multiphoton ionisation

S. N. Dixit

•Jan 1, 2015•0 citations
Perturbation theory of multiphoton ionisation due to a classical electromagnetic field is modified to allow for intermediate resonances with bound states. Complex energies, generally associated with resonances, do not enter into this formalism. For a monochromatic field of frequency u, a constant ionisation rate can then be defined unambiguously and only such continuum states are excited which correspond to the absorption of energy in integral multiples of hu. As an application, differential and total cross sections for the two-photon ionisation of hydrogen, for frequencies below the n = 3 resonance region, are obtained in closed form. Existing data for generalised cross sections, calculated numerically using the complex coordinate method, are in good agreement with the present results. Finally, the mean fractional ionisation resulting from a pulse of finite duration is estimated on the basis of the associated power spectrum. For short pulses, the time dependence of ionisation exhibits a departure from that expected of a time-independent rate.