What is Sum Frequency Generation Vibrational Spectroscopy (SFG-VS)?
Sum Frequency Generation Vibrational Spectroscopy (SFG-VS) is a powerful nonlinear optical technique used to probe the molecular structure and dynamics at interfaces. It combines two photonsâone typically in the visible range and one in the infrared rangeâsuch that their sum frequency matches a vibrational mode of the molecules at the interface. This technique is especially useful in studying surfaces and interfaces where traditional spectroscopic methods might fall short.
