Nonresonant nonlinear dispersions

Such interactions include all active processes and all nonresonant nonlinear dispersions. Thus, in such spectroscopies, the signal field must always remain in-phase with the induced polarization and y(r) is determined from Eq. (2.15a) with Ay(r) = 0. 

CARS Most popular form of nonlinear Raman or 0)2 Intensity of newly generated light at Ct>4 = Ct>i —0)2 +0)2 Fluorescence-free, intense signal at new wavelength Phase matching required owing to dispersion, nonresonant background, complex line shape... 

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