Abstract

It is commonly believed that nonlinear- spectroscopic techniques involving nearly monochromatic beams, in which one or more beam frequencies are varied, are in some sense the Fourier transforms of techniques involving ultrashort pulses, in which one or more pulse delays are varied. Although it is well known that many effects (inhomogeneous broadening, saturation, imperfect light sources, etc.) can complicate the relationship between such techniques, it is still felt that at some fundamental level, in the absence of these effects the Fourier-transform relationship of these conjugate techniques remains valid. Indeed, much work is prefaced on this assumption.

© 1993 Optical Society of America