Abstract
A quasi particle (exciton-phonon polariton) model, as a simple model of an optical near-field probe, is proposed to investigate an unresolved problem on characteristic (non-adiabatic) mechanisms in photochemical processes. Incident photon energy and intensity dependences of Zn deposition rates are analyzed and good agreement between the theoretical and experimental results is obtained. It suggests that the probe system plays an important role in non-adiabatic transitions as well as electronic transitions in photodissociation processes, and that the couplings between the optical near field and molecular vibrations are enhanced to permit a non-resonant photodissociation inherent in the optical near field.
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