Computational Nanotechnology Using Finite Difference Time Domain

4

Modeling Optical Metamaterials with and without Gain Materials Using FDTD Method

Zhixiang Huang, Bo Wu, and Xianliang Wu

The Key Laboratory of Intelligent Computing and Signal Processing, Ministry of Education, Anhui University, China

CONTENTS

4.1 Introduction

4.2 Theory Model

4.2.1 General Framework

4.2.2 Parallel FDTD Simulations of Active Media

4.2.3 The FDTD Update Algorithm

4.2.3.1 3D FDTD Algorithm for Vacuum

4.2.3.2 3D FDTD Algorithm for Drude Metal

4.2.3.3. 3D FDTD Algorithm for Gain Material (Four-Level System)

4.2.3.4 3D FDTD Algorithm for Perfectly Matched Layer

4.2.3.5 The Order of Update Algorithms in All Regions Including Vacuum, Gain Material, Drude Metal, and PML

4.3 Numerical Results

4.3.1 One-Dimensional Slab with Gain ...