Paper: 2002 Doubly-resonant sum-frequency generation spectroscopy for surface studies

Doubly-resonant sum-frequency generation spectroscopy for surface studies

Reviews and Highlights Quantum Science Molecular and Soft-matter Ultrafast Nano-optics and Nanophotonics Mineralogy and Geochemistry

Markus B. Raschke, Michitoshi Hayashi, Shenghsien H. Lin, and Yuen R. Shen
Chemical Physics Letters 359, 367 (2002).
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Doubly-resonant infrared–visible sum-frequency generation (DR-SFG) as a two-dimensional surface spectroscopy was demonstrated experimentally for the first time. Probing electronic and vibrational transitions of a surface molecular monolayer simultaneously, the technique gives access to information about the electron-vibration coupling of the surface molecules. It allows selective studies of any interface accessible by light.