发射偶极子在包括磁性和负折射材料在内的各种类型界面附近的寿命。

Lifetime of an emitting dipole near various types of interfaces including magnetic and negative refractive materials.

作者信息

Ruppin Raphael, Martin Olivier J F

机构信息

Nanophotonics and Metrology Laboratory, Swiss Federal Institute of Technology Lausanne (EPFL), 1015 Lausanne, Switzerland.

出版信息

J Chem Phys. 2004 Dec 8;121(22):11358-61. doi: 10.1063/1.1812742.

DOI:10.1063/1.1812742

PMID:15634093

Abstract

A classical electromagnetic calculation of the lifetime of an emitting electric dipole near a material slab is presented. The lifetime is deduced from the imaginary part of the electric field Green's tensor associated with the stratified medium. The method is applied not only to the well known case of metallic reflectors, but also to magnetic reflectors and to negative refractive index slabs. The frequency dependence of the nonradiative decay rate at small distances is analyzed and interpreted in terms of the surface polariton modes of the slab.

摘要

本文给出了在材料平板附近发射电偶极子寿命的经典电磁学计算。该寿命由与分层介质相关的电场格林张量的虚部推导得出。该方法不仅适用于金属反射器这一众所周知的情况，还适用于磁性反射器和负折射率平板。从小距离处非辐射衰减率的频率依赖性方面，依据平板的表面极化激元模式进行了分析和解释。