hyperpolarizability
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Hyperpolarizability — The hyperpolarizability, a nonlinear optical property of a molecule, is the second order electric susceptibility per unit volume. See nonlinear optics … Wikipedia
Intrinsic hyperpolarizability — The intrinsic hyperpolarizability is defined as the hyperpolarizability divided by the Kuzyk Limit … Wikipedia
Surface second harmonic generation — is a method for probing interfaces in atomic and molecular systems. In second harmonic generation (SHG), the light frequency is doubled, essentially converting two photons of the original beam of energy E into a single photon of energy 2 E as it… … Wikipedia
Kuzyk quantum gap — The Kuzyk quantum gap is a discrepancy between the maximum value of the nonlinear optical susceptibility allowed by quantum mechanics and the highest values actually observed in real molecules. The highest possible value (in theory) is known as… … Wikipedia
Basis set (chemistry) — A basis set in chemistry is a set of functions used to create the molecular orbitals, which are expanded as a linear combination of such functions with the weights or coefficients to be determined. Usually these functions are atomic orbitals, in… … Wikipedia
