In 2000, Professor Mark G. Kuzyk of Washington State University calculated the fundamental limit of the nonlinear-optical susceptibility of molecules.
In either case, the absolute value of the nonlinearity achieved is impressive, and these kinds of materials may some day supercharge the internet.
Shorter wavelength light sources would hence yield higher density optical recording media (such as DVDs and CDs).
Kuzyk's calculations can be used to predict the behavior of optical devices, guide synthetic chemists to make better materials, and to gain a deeper understanding of how light interacts with matter.
Perhaps most importantly, the Kuzyk Limit can be used to calculate the intrinsic hyperpolarizability, which is a scale invariant quantity that can be used to compare molecules of different sizes.