The high glass transition temperature polymer polyetherketone doped with disperse red 13 (DR13/PEK-c) has been prepared by the spin-coating method.Through in situ second-harmonic generation,the corona poling temperature was optimized by measuring the temperature dependence of the in situ second-harmonic generation signal intensity under the poling electric field.The linear electro-optic coefficients of the poled polymer films have been determined at 632.8 nm by using a simple interferometric technique.The polymer system was measured after 13000h,and found that it remained at 80% of its initial value.
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