We propose a new heterodyne scheme for performing time-resolved four-wave mixing experiments with collinear pump and probe beams. The method is not limited by phase-matching requirements and permits the investigation of thick samples and waveguide devices such as semiconductor optical amplifiers.
© 1996 Optical Society of America
A. Mecozzi, J. Mørk, and M. Hofmann, "Transient four-wave mixing with a collinear pump and probe," Opt. Lett. 21, 1017-1019 (1996)