Formation of coherent transients by incoherent light pulses has stimulated renewed interest in time-resolved coherent spectroscopy. Standard theories conveniently account for the weak-field regime experiments, but they fail to interpret the power effects that occur during resonant excitation of a sample by time-delayed, correlated, broadband laser pulses. We report on a new approach to this problem. We have been able to determine the expectation value of the population grating induced by two time-delayed, correlated, broadband light pulses under the limitation that one of the fields is weak. We have developed a diagrammatic technique that seems promising for the calculation of actual coherent-transient signals in the strong-field regime.
© 1988 Optical Society of America
P. Tchénio, A. Débarre, J.-C. Keller, and J.-L. Le Gouët, "Population grating induced by time-delayed, correlated, broadband light pulses in the strong-field regime," J. Opt. Soc. Am. B 5, 1293-1300 (1988)