一种芴衍生物的三光子吸收光稳幅效应及三光子吸收拟合方法研究  

Investigation on three-photon-absorption fitting method and three-photon-absorption-induced optical stabilication effect of a fluorene derivative

作　　者：刘军辉[1] 李国凤[1] 王渊旭[1] 

机构地区：[1]河南大学物理与电子学院计算材料研究所,开封475004

出　　处：《物理学报》2013年第1期435-440,共6页Acta Physica Sinica

基　　金：国家自然科学基金(批准号:11004048);河南省科技厅基础与前沿技术(批准号:122300410105);河南省教育厅计划指导项目(批准号:2009B140002)资助的课题~~

摘　　要：由于忽略激光能量分布的不均匀性,当前常用的非线性透过率方法得到的三光子吸收系数的拟合误差比较大.现有材料的三光子吸收截面还比较小,阻碍了人们对三光子吸收特性的应用.本文提出了一种精确的三光子吸收拟合方法,适合于各种能量分布不均匀的激光脉冲.合成了一种具有三光子吸收特性的对称型芴类衍生物2,7-二(4-甲氧基苯乙炔)-9-硫酮芴,三光子吸收截面较大,具有很好的激光脉冲光稳幅特性.Three-photon absorption coefficient obtained by current nonlinear transmittance method has large fitting error because of uneven laser radiation distribution. Relatively small three-photon absorption cross section values of present nonlinear molecules restrict their practical applications. In this paper, an accurate three-photon absorption coefficient fitting method is presented, which is applicable for a variety of laser distributions. A fluorene-based derivative, 2, 7-bis（4-methoxyphenylacetylene）-9-thoine-fluorene, is synthesized. Apparent three-photon-absorption-induced optical stabilization effect is shown.

关 键 词：三光子吸收 光稳幅 吸收截面 上转换发光 

分 类 号：TB383.1[一般工业技术—材料科学与工程]