Enhanced optical properties of metal‐coated nanoparticles
Enhanced optical properties of metal‐coated nanoparticles
复制标题
DOI：
10.1063/1.353290
复制
发表时间：
1993-02
影响因子：
3.2
通讯作者：
J. Haus;Haoshen Zhou;S. Takami;M. Hirasawa;I. Honma;H. Komiyama
中科院分区：
文献类型：
--
作者：
J. Haus;Haoshen Zhou;S. Takami;M. Hirasawa;I. Honma;H. Komiyama
金属涂层的纳米尺寸颗粒采用涂层厚度的真实分布进行建模。给出了局部场增强、吸收和非线性光学响应的一般表达式。此外，启发式参数用于确定漫射而不是尖锐界面的效果。线性和非线性光学性质的有效介质理论的范围内进行了讨论小体积分数。一个有效的解决方案的方法是使用的灵活性，以处理任意数量的涂层。
Metal‐coated, nanometer‐size particles are modeled with a realistic distribution of coating thicknesses. General expressions are given for the local‐field enhancement, absorption, and nonlinear optical response. In addition, heuristic arguments are used to determine the effects of a diffuse, rather than a sharp interface. The linear and nonlinear optical properties are discussed within the context of the effective medium theory for small volume fractions. An efficient method of solution is used with the flexibility to handle an arbitrary number of coatings.