Abstract
A wide range of third-order nonlinear optical processes are mediated by the molecular second hyperpoiarizability(γ −ωσ;ω1,ω2,ω3). The relations between these nonlinear processes are complicated because γ is a function of three frequency arguments and the electronic and vibrational1 contributions to γ quite different frequency dependences. However, by considering the electronic and vibrational contributions to γ separately, the complete frequency dependence of γ becomes simpler to understand.
© 1987 Optical Society of America
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