Abstract
Time-domain experiments to establish vibrational energy relaxation mechanisms for adsorbates at surfaces are carried out using transient sum frequency generation (SFG). An intense resonant (IR) pump pulse vibrationally excites molecules at the surface. The subsequent population relaxation is followed by monitoring the SFG signal from a delayed pair of synchronized picosecond IR and visible probe pulses.
© 1990 Optical Society of America
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