Ultrafast sum-frequency generation for studies of coupled gas-surface interactions

Christopher Kliewer

doi:10.1117/12.2597290

1 August 2021 Ultrafast sum-frequency generation for studies of coupled gas-surface interactions

Christopher Kliewer

Proceedings Volume 11825, Ultrafast Nonlinear Imaging and Spectroscopy IX; 118250D (2021) https://doi.org/10.1117/12.2597290
Event: SPIE Optical Engineering + Applications, 2021, San Diego, California, United States

Abstract

The first detection of surface-bound free rotors with exceptionally long rotational and vibrational coherence lifetimes was detected for both CO and CH4 adsorption to Au at near-ambient pressures. Hybrid femtosecond/picosecond sum-frequency generation vibrational spectroscopy was used to detect rovibrational coherence recurrences with coherence lifetimes lasting several 10’s of picoseconds. The observations challenge our understanding of weak adsorption of molecules to metal surfaces.

Conference Presentation

Citation Download Citation

Christopher Kliewer "Ultrafast sum-frequency generation for studies of coupled gas-surface interactions", Proc. SPIE 11825, Ultrafast Nonlinear Imaging and Spectroscopy IX, 118250D (1 August 2021); https://doi.org/10.1117/12.2597290

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