New chemical measurements with nonlinear spectroscopy

摘要

Multiresonant, nondegenerate, four wave mixing spectroscopy involves three simultaneous resonances that can be used to achieve spectral selectivity in chemical measurements. There are nonlinear analogs to the familiar Raman, infrared, absorption, and fluorescence. Unlike the familiar methods, the multiple resonances of the nonlinear methods can be used to dissect the spectra into the modes and sites that are responsible for the spectral structures.