Complex sentence: Using the same principles pioneered by 2D-NMR experiments, multidimensional optical spectroscopy is possible using ultrafast pulses and different frequencies can probe various dynamic molecular processes to differentiate between inhomogeneous and homogeneous line broadening as well as identify coupling between the measured spectroscopic transitions.
Split into simpler sentences: Using the same principles pioneered by 2D-NMR experiments, multidimensional optical spectroscopy is possible using ultrafast pulses. Different frequencies can probe various dynamic molecular processes to differentiate between inhomogeneous and homogeneous line broadening as well as identify coupling between the measured spectroscopic transitions.