Light-Induced Molecular Potentials
1997; American Physical Society; Volume: 78; Issue: 12 Linguagem: Inglês
10.1103/physrevlett.78.2333
ISSN1092-0145
AutoresChristof Wunderlich, Esther Kobler, H. Figger, Theodor W. Hänsch,
Tópico(s)Advanced Chemical Physics Studies
ResumoWe investigate the dissociation dynamics of molecules exposed to intense laser fields that induce electronic Rabi frequencies comparable to the frequency of nuclear vibration. A fast, mass selected beam of the simply structured model molecule ${\mathrm{Ar}}_{2}^{+}$ was prepared in low vibrational levels and crossed with a dye laser beam (532 nm, $\ensuremath{\le}5\ifmmode\times\else\texttimes\fi{}{10}^{12}\mathrm{W}/{\mathrm{cm}}^{2}$). The absolute number of photofragments has been measured as a function of intensity. A clear experimental signature of light-induced potential curves is observed: enhanced dissociation by tunneling through a light-induced potential barrier. This is deduced from a quantitative comparison with theoretical predictions.
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