纳米颗粒-介电复合材料三阶光学非线性的研究进展  

Research Progress on Third-order Optical Nonlinearity of Nanopartical-Dielectric Composites

作　　者：许静仙[1] 赵颖[1] 杨修春[1] 

机构地区：[1]同济大学材料科学与工程学院,上海200092

出　　处：《材料导报》2009年第13期87-90,共4页Materials Reports

基　　金：上海市科委(05JC14058);国家自然科学基金(50672069)

摘　　要：纳米颗粒-介电复合材料显示出优良的三阶非线性光学性能,是应用于未来全光器件的理想材料。其中,纳米颗粒的尺寸、浓度、组成和结构,基体的选择,测试方法中选用的激光波长和脉冲宽度等多种因素都对此类复合材料的三阶非线性光学性能有很大的影响,了解这些影响因素对材料的制备和应用具有重要的指导意义。在此基础上,研究指出核壳结构纳米颗粒-介电复合材料具有更加优异的三阶非线性光学性能,是目前的研究热点。Nanoparticle-dielectric composites will be a promising candidate for application in all-optical devices owing to their excellent third-order nonlinear optical properties. The factors influencing third-order optical nonlinearity of the nanocomposites are discussed, including the size, concentration, composition and structure of nanoparticles, the dielectric property of matrix as well as laser wavelength and pulse duration. Based on these discussions, it＇s pointed out that nanoparticles with core-shell structure in dielectric matrix possess an enhanced third-order nonlinear optical property, which is becoming one of the current research hotspots.

关 键 词：纳米复合材料 三阶光学非线性 影响因素 核壳结构 

分 类 号：TB33[一般工业技术—材料科学与工程] TN304.01[电子电信—物理电子学]