Bifurcation intramolecular dynamics at photoisomerization and modeling of the robust control of photoisomerization molecules-by light pulses

The study of intramolecular bifurcational dynamics of photoisomerization at an irradiation of a molecule by weak and enough long (much more in comparison with the period of considered vibrations of "isomerization oscillator" in the exited resonant electronic state of a molecule) light pulses is given. The dynamics is described using the results of the numerical solution of self-consistent Schrodinger equations for amplitudes of electronic states of molecule and Newton equation for isomerization coordinate. The examples of the "frequency" and "duration bifurcations" of choice of one or another well of the double-well potential by isomerization oscillator are given. It is concluded that at reduction of duration of pulses of an irradiation resulting in irreversible isomerization, the range of carrier frequency without bifurcation values extends. This can be considered as the contribution to development of a general approach to assessing robustness in control of photochemical reactions