) of the molecular polarizability, 𝛼 (𝑄 𝑖 and 𝑄 𝑗 refer to normal modes). We refer to Ref. for more details of these expressions, noting that our computational treatment assumes uniform external field strengths over the spectral region considered -thus not considering any pulse frequency envelope nonuniformity in experiment -and employs Gaussian line-shapes rather than the Lorentzian line-shapes dictated by the Ref. development.