Intrinsic hyperpolarizability

The intrinsic hyperpolarizability is defined as the hyperpolarizability divided by the Kuzyk Limit.[1] This quantity is scale invariant and thus is independent of the energy scale and number of electrons in a molecule that is being evaluated for its nonlinear optical response. Therefore, it can be used to compare molecules of different shapes and sizes.

The Intrinsic Hyperpolarizability can be used as a figure of merit for comparing molecules for their usefulness in electro-optics applications.

References

Zhou, Juefei; Kuzyk, Mark G. (2008). "Intrinsic Hyperpolarizabilities as a Figure of Merit for Electro-optic Molecules". The Journal of Physical Chemistry C. 112: 7978–7982. arXiv:0807.0886. doi:10.1021/jp7120824.

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[1] Zhou, Juefei; Kuzyk, Mark G. (2008). "Intrinsic Hyperpolarizabilities as a Figure of Merit for Electro-optic Molecules". The Journal of Physical Chemistry C. 112: 7978–7982. arXiv:0807.0886. doi:10.1021/jp7120824.