Simulation method for resonant light scattering of exciton confined to arbitrary geometry

作     者：Uemoto, Mitsuharu Ajiki, Hiroshi 

作者机构：Osaka Univ Grad Sch Engn Sci Dept Mat Engn Sci Osaka 5608531 Japan Osaka Univ Photon Pioneers Ctr Suita Osaka 5650871 Japan 

出 版 物：《OPTICS EXPRESS》 (Opt. Express)

年 卷 期：2014年第22卷第8期

页      面：9450-9464页

核心收录：

学科分类：070207[理学-光学] 07[理学] 08[工学] 0803[工学-光学工程] 0702[理学-物理学] 

基　　金：25400325 

主　　题：Computation methods Light scattering Mie theory Photonic crystal cavities Physical vapor deposition Quantum dots 

摘      要：We develop an electromagnetic (EM) simulation method based on a finite-element method (FEM) for an exciton confined to a semiconductor nanostructure. The EM field inside the semiconductor excites two transverse exciton polariton and a single longitudinal exciton at a given frequency. Established EM simulation methods cannot be applied directly to semiconductor nanostructures because of this multimode excitation;however, the present method overcomes this difficulty by introducing an additional boundary condition. To avoid spurious solutions and enhance the precision, we propose a hybrid edge-nodal element formulation in which edge and nodal elements are employed to represent the transverse and longitudinal polarizations, respectively. We apply the developed method to the EM-field scattering and distributions of exciton polarizations of spherical and hexagonal-disk quantum dots. (C) 2014 Optical Society of America