Optical nonlinearity in organic and organometallic molecules via lattice inclusion complexation
 There are disclosed a nonlinear optical element capable of second harmonic generation comprising a crystalline inclusion complex of a lattice-forming host compound crystallized with continuous channel cavities in the presence of a nonlinearly polarizable guest compound in a noncentrosymmetric space group, said guest compound having specified properties, and both said guest and host being selected from specified classes; a nonlinear optical device; a method of generating second harmonic radiation; and an electro-optic modulator. 
E. I. Du Pont de Nemours and Company
G
G02F
inventional
Albert G. Wilson David F. Ying
Anderson Tam Eaton Wang