Optimal control of photoelectron emission by realistic waveforms

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

    Research output: Contribution to journalArticleScientificpeer-review

    1 Citation (Scopus)
    27 Downloads (Pure)

    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
    Publication statusPublished - 2017
    Publication typeA1 Journal article-refereed

    Keywords

    • Above-threshold ionization
    • optimal control
    • waveforms

    Publication forum classification

    • Publication forum level 1

    ASJC Scopus subject areas

    • Atomic and Molecular Physics, and Optics

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