The Time Development of Two-Photon Absorption
Recently Allen & Stroud, using a density matrix approach, developed a general theory1 to describe the excitation of a highlying atomic or molecular state by the absorption of n photons from n different lasers. It was assumed that no intermediate states were resonantly excited. In the most general form the process is described by a set of n-photon Bloch equations.
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- 8.L. Allen and D. McMahon (to be published).Google Scholar