Related Experiment Video
Updated: May 23, 2026

Measurement of Coherence Decay in GaMnAs Using Femtosecond Four-wave Mixing
Published on: December 3, 2013
Quasi-phase-matched DC-induced three wave mixing versus four wave mixing: a simulated comparison
Christopher A Sapiano1, J Stewart Aitchison, Li Qian
1Department of Electrical and Computer Engineering, University of Toronto, Toronto, Ontario, Canada. chris.sapiano@utoronto.ca
Abstract:
A comparison is made between DC-induced three-wave mixing under an on-off quasi-phase-matching scheme and a perfectly phase-matched four wave mixing process. It is shown that the DC-induced process is capable of producing a significantly larger conversion efficiency than the four wave mixing process. Despite the fact that it suffers greater effects of dispersion, the enhanced growth rate of the DC-induced process provides a conversion efficiency roughly 300× larger than that of four wave mixing. Over a sample length of 20 cm the DC-induced process is able to generate idler power more than 270 times greater than that produced by the equivalent four wave mixing process.
Related Concept Videos
Interference: Path Lengths
Two special sources may be considered when they are in phase. This can be easily achieved by feeding the two sources from the same source. An example would be synchronizing the two speakers by feeding them with the same source, such as the sound waves produced by a tuning fork. This setup ensures that the two sources have the same frequency and are...
Interference and Superposition of Waves
Interference occurs in mechanical waves, such as sound waves, waves on a string, and surface water waves. Mechanical waves correspond to the physical displacement of particles. Hence,...
Interference and Diffraction

