Abstract
The advantages of attaching organic chromophores to polymer backbones for use in second-order nonlinear optical (NLO) applications are well known. In particular, very high chromophore densities can be achieved, and the stability of the chromophore orientation after poling is significantly improved.1 The present work concerns the properties of a new class of NLO polymer based on a polyphosphazene backbone. Polyphosphazenes are inorganic polymers with a backbone consisting of alternating nitrogen and phosphorous atoms as shown in Fig. I.2 Organic functional groups can be attached at R1 and R2, hence giving the capability of tailoring the physical properties of the polymer. For example, it should be possible to combine NLO chromophores with cross-linkable groups on the same backbone, hence allowing the possibility of very stable materials.
© 1990 Optical Society of America
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