Optimal control of photoelectron emission by realistic waveforms

J. Solanpää*, M. F. Ciappina, E. Räsänen

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

Recent experimental techniques in multicolor waveform synthesis allow the temporal shaping of strong femtosecond laser pulses with applications in the control of quantum mechanical processes in atoms, molecules, and nanostructures. Prediction of the shapes of the optimal waveforms can be done computationally using quantum optimal control theory. In this work we demonstrate the control of above-threshold photoemission of one-dimensional hydrogen model with pulses feasible for experimental waveform synthesis. By mixing different spectral channels and thus lowering the intensity requirements for individual channels, the resulting optimal pulses can extend the cutoff energies by at least up to 50% and bring up the electron yield by several orders of magnitude. Insights into the electron dynamics for optimized photoelectron emission are obtained with a semiclassical two-step model.

Original languageEnglish
Pages (from-to)1784-1792
Number of pages9
JournalJournal of Modern Optics
Volume64
Issue number17
DOIs
StatePublished - 25 Sep 2017
Externally publishedYes

Keywords

  • Above-threshold ionization
  • optimal control
  • waveforms

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