【摘要】 合成表征了C60 和苯乙炔共聚物。详细地测试了聚合物溶液的光限幅性能。研究结果表明随溶液浓度增加。聚合物光限幅性能增加 ,聚合物溶液透射率为 63%时 ,在低入射激光光强时 ,透射光强度随入射光强度增加而增加 ;当入射光强度达 4.6J/cm2 透射光强开始偏离线性 ,随着入射光强进一步增加 ,透射光强逐渐达到一个饱和值 ,当入射光强为7.4J/cm2 时 ,透射光强度几乎不再随入射光强度增大而增加 ,接近一个阈值 ( 0 .94J/cm2 )。对于溶液透射率为 68%和 77%时 ,这种阈值分别约为 1 .1J/cm2 和 2 .0J/cm2 。这种聚合物呈现出明显的反饱和吸收光限幅特性。更多还原

【Abstract】 In the paper, the copolymer of C 60 and phenylacetylene with C 60 of 6.9 wt % was synthesized and its structure was charcterized. The optical limiting properties from the polymers in THF solution were studied. The results indicated that the polymer solution with transmittance of 63% (C = 8x10 -4 g/L) exhibited excellent optical limiting properties with output amphitude energy of 0.94 J/cm 2 while homopolyphenylacetylene has no optical limiting properties under the same condition. The amphitude energy increase with the increasing of the solution concentrations. The optical limiting behavior appears to originate from reverse saturable absorption and shows that the copolymer is promising material for optical limiter.更多还原