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Suppression of strong-field ionization by optimal pulse shaping: Application to hydrogen and the hydrogen molecular ion

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Yksityiskohdat

AlkuperäiskieliEnglanti
Artikkeli023425
Sivumäärä7
JulkaisuPhysical Review A
Vuosikerta91
Numero2
DOI - pysyväislinkit
TilaJulkaistu - 20 helmikuuta 2015
OKM-julkaisutyyppiA1 Alkuperäisartikkeli

Tiivistelmä

We investigate the ability of quantum optimal control theory to shape pulses suppressing strong-field ionization of a hydrogen atom and a H-2(+) molecule. We show that considerable suppression of the ionization yield can be achieved for both H and H-2(+) with optimal pulse shaping for a fixed fluence and pulse length. The mechanisms responsible for ionization suppression and the shape of the optimized pulse are different for infrared and ultraviolet laser fields. In the low-frequency regime the optimized pulse reduces the ionization yield by suppressing the highest peaks of the laser field. For the higher laser frequencies considered the ionization yield of H can be decreased by exciting low-lying resonances.

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