Wave Packet Dynamics in Ultrafast Spectroscopy of the Hydrated Electron

Hydrated-electron dynamics is examined by frequency-resolved pump-probe experiments using pulses of 13 fs centered at 780 nm. A recurrence at ~40 fs signifies a strong coupling of the electronic transition to underdamped solvent motions. Wave packet dynamics launched by the pump pulse produces an ultrafast red-shift of the electronic transition by approximately 6500 cm-1. Gross features of the pump-probe experiments are analyzed using a two-level system

Hydrated Electron Dynamics at a Five Femtosecond Time Scale

Hydrated electrons are studied by frequency resolved pump probe with 5 fs time resolution in the spectral range from 600 nm to 1000 nm. A recurrence detected in the pumpprobe signal at —40 fs is tentatively assigned to coupling to librational motions in the electron's solvent cage