Visible-infrared two-dimensional Fourier-transform spectroscopy

Opt Lett. 2002 Nov 15;27(22):2043-5. doi: 10.1364/ol.27.002043.

Abstract

We report on a new class of optical multidimensional Fourier-transform spectroscopy associated with a visible excitation-infrared emission configuration, in which the emitted field results from second-order optical nonlinearities. This configuration is demonstrated on a phase-matched sample of known nonlinear response by coherent measurement of the mid-infrared field emitted after a femtosecond visible double-pulse excitation.