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.
© 2002 Optical Society of America
Nadia Belabas and Manuel Joffre, "Visible-infrared two-dimensional Fourier-transform spectroscopy," Opt. Lett. 27, 2043-2045 (2002)