Abstract
Polymers with large and fast nonlinear optical (NLO) response are necessary for optical signal processing systems. Conducting polymers with linear and extensive π-electron delocalization are revealed to have high NLO susceptibility toward their chain directions. Photoexcitation of polarons and bipolarons in linear conjugated polymers results in relatively large values of the third-order nonlinear coefficient χ(3).1 But conducting polymers are normally in the crystalline state and are difficult to process because of their insolubility. Here, we report NLO measurements on polyemeraldine (PMAn), a new kind of linear conducting polymer, which is soluble and easy to fabricate in thin film form.
© 1992 Optical Society of America
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