TUTCRIS - Tampereen teknillinen yliopisto

TUTCRIS

Optimal control of photoelectron emission by realistic waveforms

Tutkimustuotos: Lehtiartikkeli

Yksityiskohdat

AlkuperäiskieliEnglanti
Sivut1784-1792
Sivumäärä9
JulkaisuJournal of Modern Optics
Vuosikerta64
Lehden numero17
DOI - pysyväislinkit
TilaJulkaistu - 2017
OKM-julkaisutyyppiA1 Alkuperäisartikkeli

Tiivistelmä

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.

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