title: Nonadiabatic photodissociation process using an optical near field.
abstract: We demonstrated the deposition of nanometric Zn dots using photodissociation with gas-phase diethylzinc and an optical near field under nonresonant conditions. To explain the experimental results, we proposed an exciton-phonon polariton model, and discuss the quantitative experimental dependence of the deposition rate on the optical power and photon energy based on photodissociation involving multiple-step excitation via molecular vibration modes. The physical basis of this process, which seems to violate the Franck-Condon principle, is the optically nonadiabatic excitation of the molecular vibration mode due to the steep spatial gradient of the optical near-field energy.
authors.affiliation: SORST, Japan Science and Technology Agency, 687-1 Tsuruma, Machida, Tokyo 194-0004, Japan. kawazoe@ohtsu.jst.go.jp
authors.forename: Tadashi
authors.initials: T
authors.lastname: Kawazoe
authors.forename: Kiyoshi
authors.initials: K
authors.lastname: Kobayashi
authors.forename: Satoru
authors.initials: S
authors.lastname: Takubo
authors.forename: Motoichi
authors.initials: M
authors.lastname: Ohtsu