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Inducing Coherent Oscillations in the Electron Transfer Dynamics of a Strongly Dissipative System with Pulsed Monochromatic Light

1995; American Physical Society; Volume: 75; Issue: 20 Linguagem: Inglês

10.1103/physrevlett.75.3649

1092-0145

Deborah G. Evans, Rob D. Coalson, Hyung J. Kim, Yu.I. Dakhnovskii,

Photoreceptor and optogenetics research

Calculations are presented that suggest coherent oscillations in the electronic state populations of an electron transfer reaction in a polar solvent can be induced by subjecting the system to a sequence of monochromatic laser pulses on the picosecond time scale. These oscillations are produced by pumping the system between different steady state distributions attained in the presence and absence of a strong continuous-wave electric field. The amplitude and rise time of these time-dependent oscillations may be altered by changing the pulse duration and the electric field strength. The experimental realization of the proposed scheme will require strong electric fields (\ensuremath{\approx}${10}^{7}$ V/cm), and the effect will be most pronounced for activationless reactions.