Light-induced inhomogeneous broadening in dye solution probed by wave-mixing with broadband lasers

摘要

Time-delayed wave-mixing with broadband dye lasers was performed in a solution of Sulforhodamine 640 in ethanol at room temperature. The experiments were conducted at various laser powers. The results at low intensities show the behavior of the S_(0)-S_(1) transition as homogeneous. At high intensities the transition reveals inhomogeneous broadening which is attributed to the redistribution of the vibrational population.