Slow dephasing and local field effects of exciton–biexciton transition in detected by femtosecond degenerate four-wave mixing

Coherent molecular vibrational dynamics of CH2 stretching modes in polyethylene studied by femtosecond-CARS

“…the homogeneous linewidth is comparable to the inhomogeneous one. In that case, it is well known that the four‐wave mixing signals, including CARS, show the signal components that appear at negative delay …”

Effects of Interactions with Cyclic Solvent Molecules on Optical Dephasing of CdSe/ZnS Colloidal Quantum Dots Detected by Femtosecond Four-Wave Mixing Spectroscopy

“…The pulse duration of the second harmonic light was measured to be approximately 47 fs from the autocorrelation trace, and its bandwidth was approximately 60 meV. We employed the conventional two-beam excitation geometry in the FWM experiments 23) and the FWM signals in 2k 2 À k 1 were measured at room temperature as a function of the delay time between the two excitation beams with the wave vectors k 1 and k 2 .…”