The discovery that one can generate corhrent blue light by putting intense red light into a non-linear crystal lies at the heart of modern optics.

This important, fundamental experiment was done in 1961 at the University of Michigan by Peter Franken, Alan Hill (then a UM undergraduate), Wilbur Peters, and Gabriel Weinreich.

The outgoing radiation, represented as a periodic structure in stainless steel, has twice the frequency (or half the wavelength) of the incoming radiation shown in bronze.

The proposed location is on the East University Mall betweeen East and West Hall.