Abstract
The demonstration of substantial second-and third-order1,2 nonlinear optical susceptibilities of doped polymer systems has resulted in intense research activity.3 Second-order nonlinear optical properties of these materials are highly sensitive to the orientational order of the optically nonlinear dopants.4 To impart a second-order susceptibility, the isotropic bulk must be poled with an electric field above the glass transition temperature to break the inversion symmetry and cooled in the presence of the field to lock in the orientational order when the field is turned off.
© 1989 Optical Society of America
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