Sum Frequency Generation for Surface Vibrational Spectroscopy

This customized SFG-VS spectrometer incorporates unique polarization and incident angle control to enable versatile measurement of the surface vibrational spectroscopy of various molecular interfaces with submonolayer sensitivity. The spectral resolution of this system is about 4-6 cm-1, significantly better than most other broadband SFG-VS spectrometers, which typically have a spectral resolution of 15 cm-1. This robust and easy-to-use system is meant to work together with the FemtoPico HR-BB-SFG-VS spectrometer for routine SFG-VS measurements and screening samples. Work published in the Journal of Physical Chemistry C also demonstrated the SFG-VS spectrometer's powerful application capacity with the high-resolution spectrometer and systematic polarization analysis.

This spectrometer offers efficient measurement in different polarization combinations and experimental configurations (or incident angles), allowing quantitative polarization analysis. It accommodates gasliquid and gassolid interface measurement, while liquid and gas flow sample cells allow measurement of liquidsolid interfaces and gassolid interface in the vacuum chamber under controlled temperature (-150C600C) and pressure (10-6 to 1k Torr). Customized cells designed according to specific needs can also be incorporated.