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A new model of the primary events of the bacteriorhodopsin (BR) photocycle is derived from the analysis of vibrational spectroscopic data obtained from native BR (BR-570) and three artificial BR pigments containing structurally modified retinals with carbon rings bridging specific C–C and CC bonds (BR6.11, BR6.9, and BR5.12). Vibrational spectra from the ground-states and from picosecond intermediates...
Using a single shaped femtosecond pulse, a molecular wavepacket is both tailored and monitored. Several toluene vibrational levels are excited in a controlled manner, both in amplitude and phase, through a quantum coherently controlled non-resonant Raman process. The entire coherent anti-Stokes Raman spectroscopy (CARS) process, that includes excitation and probing of the Raman-induced wavepacket,...
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