Measuring Complex Sum Frequency Spectra with a Nonlinear Interferometer.

Abstract

Currently, the only techniques capable of delivering molecular-level data on buried or soft interfaces are the nonlinear spectroscopic methods: sum frequency generation (SFG) and second harmonic generation (SHG). Deducing molecular information from spectra requires measuring the complex components-the amplitude and the phase-of the surface response. A new… (More)
DOI: 10.1021/acs.jpclett.6b00792

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