Abstract

In order to obtain second order nonlinear optical properties in doped (or functionalized) polymer films, it is necessary to orient the polar dopant molecules (poling process) and to insure a long term stability of this orientation. Other applications of organic films, such as writing polarization gratings by photoinduced anisotropy, deal with alignment of molecules (i.e. an anisotropic but centrosymmetric distribution).

© 1992 Optical Society of America