High x(2) optical article with improved buffer layer.

摘要

An optical article for the propagation of electromagnetic radiation is disclosed comprised of an electrically conductive support (101) on which a poled polymeric film (105) exhibiting a glass transition temperature of at least 80 DEG C and a second order polarization susceptibility greater than 10<-><9> electrostatic units is formed. A layer (103) for enhancing the transmission of electromagnetic radition is interposed between the electrically conductive support and the poled polymeric film. The transmission enhancement layer is an amorphous layer of at least o.5 mu m in thickness having a refractive index less than that of the polymeric film and a resistance less than 10 times that of the polymeric film. The transmission enhancement layer being comprised of a mixture of (a) at least one metal oxide or fluoride and (b) a low molecular weight aromatic compound.