Line-source excited impulsive EM field response of thin plasmonic metal films

被引：4
|
作者：
Stumpf, Martin [1 ,2 ]
Vandenbosch, Guy A. E. [1 ]
机构：
[1] Katholieke Univ Leuven, ESAT TELEMIC, B-3001 Louvain, Belgium
[2] Brno Univ Technol, SIX Res Ctr, Brno 61600, Czech Republic
来源：
PHOTONICS AND NANOSTRUCTURES-FUNDAMENTALS AND APPLICATIONS | 2013年 / 11卷 / 03期
关键词：
Thin metallic film; Time domain; Cagniard-DeHoop method; Drude model; CONDUCTIVE PROPERTIES; SURFACE-PLASMONS; HIGH-CONTRAST; WAVE-GUIDE; RELAXATION; RESONANCE; ELECTRONS; SILVER; MEDIA;
D O I：
10.1016/j.photonics.2013.05.001
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
In this paper, reflection against and transmission through thin plasmonic metal films, basic building blocks of many plasmonic devices, are analytically investigated directly in the time domain for an impulsive electric and magnetic line-source excitation. The electromagnetic properties of thin metallic films are modeled via the Drude model. The problem is formulated with the help of approximate thin-sheet boundary conditions and the analysis is carried out using the Cagniard-DeHoop technique. Closed-form space-time expressions are found and discussed. The obtained time-domain analytical expressions reveal the existence of the phenomenon of transient oscillatory surface effects along a plasmonic metal thin sheet. Illustrative numerical examples of transmitted/reflected pulsed fields are provided. (C) 2013 Elsevier B.V. All rights reserved.
引用
收藏
页码：253 / 260
页数：8
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