Both theory and experiment are used to examine problems of current photophysical and photochemical interest using the nonlinear interaction of light with matter as the basic setting.
Emphasis is on ultrashort time resolution.
Each offers a different approach to ultrafast time resolution. Both offer new ways of achieving ultrahigh spectral resolution even in room-temperature liquids. In addition, new, versatile, diagrammatic techniques generalize the use of noisy light to all established nonlinear spectroscopies. Of these, our interests range from resonance Raman scattering to several resonant and nonresonant four-wave mixing phenomena, resonant second and third harmonic generation, and multiphoton absorption processes. Ultrafast time resolution probes a variety of rapid processes in the condensed phase.