Raman-assisted polarization beats in time-delayed four-wave mixing.
We demonstrate a method for determining the phase of the third-order susceptibility, chi ((3)), in the proximity of a Raman resonance. The measurements were based on the phenomenon of polarization beats, which was exploited in a time-delayed four-wave-mixing experiment with bichromatic beams. The phase dispersion of chi((3)) was studied close to resonance with the 655.7-cm(-1) vibrational mode of carbon disulfide.
Ma
H
H
Gomes
A S
AS
de Araújo
C B
CB