On optimal designing of low frequency polychromatic fields for facile photo-dissociation of model diatomic molecules

Abstract

The dissociation of a diatomic molecule in low frequency polychromatic fields of moderate intensities is studied. Genetic Algorithm is invoked to search out a set of four optimal non-resonant frequencies (ω ₁ - ω ₄), intensities (ε₁-ε₄) the and phase angles (δ₁ - δ ₄), for achieving a facile photo dissociation. Time-dependent Hellmann-Feynman theorem is used to gain insight into the frequency resolved energy absorption pattern. The 'quantum phase space' structures indicate occurrence of bond breaking dynamics akin to the classical one.