摘要
A soluble poly（2-methoxy-5-decoxy）-p-phenylene vinylene （PMODOPV） was synthesized via dehydrochlorination reaction and characterized by UV-visible absorption spectrum. The results showed that PMODOPV had a broad optical absorption band in the range of 450--550 nm and the optical band gap was calculated to be around 2.12 eV. The third-order nonlinear optical susceptibilities （X^（3）） of PMODOPV films implanted by 30-keV N^＋ ions in the dose range of 3.8 × 10^15-9.6 × 10^16 ions/cm^2 were measured by degenerate four-wave mixing （DFWM） technique. The results demonstrated that the resonant and offresonant X^（3） values were all enhanced significantly by means of ion implantation. The maximum resonant X^（3） value of 9.67 × 10^-9 esu at 532 nm and off-resonant X^（3） value of 2.49 × 10^-10 esu at 1.064 μm were obtained when the ion dose was 3.8 × 10^16 ions/cm^2.
A soluble poly（2-methoxy-5-decoxy）-p-phenylene vinylene （PMODOPV） was synthesized via dehydrochlorination reaction and characterized by UV-visible absorption spectrum. The results showed that PMODOPV had a broad optical absorption band in the range of 450--550 nm and the optical band gap was calculated to be around 2.12 eV. The third-order nonlinear optical susceptibilities （X^（3）） of PMODOPV films implanted by 30-keV N^＋ ions in the dose range of 3.8 × 10^15-9.6 × 10^16 ions/cm^2 were measured by degenerate four-wave mixing （DFWM） technique. The results demonstrated that the resonant and offresonant X^（3） values were all enhanced significantly by means of ion implantation. The maximum resonant X^（3） value of 9.67 × 10^-9 esu at 532 nm and off-resonant X^（3） value of 2.49 × 10^-10 esu at 1.064 μm were obtained when the ion dose was 3.8 × 10^16 ions/cm^2.
基金
This work was supported by the National Natural Sci-ence Foundation of China under Grant No. 60277002 the Scientific Research Foundation of Xi'an Jiao-tong University.
