具有嵌入式增益的负折射率材料的频域模拟。

Frequency-domain simulations of a negative-index material with embedded gain.

作者信息

Sivan Yonatan, Xiao Shumin, Chettiar Uday K, Kildishev Alexander V, Shalaev Vladimir M

机构信息

Birck Nanotechnology Center, School of Electrical and Computer Engineering, Purdue University, West Lafayette, IN 47907, USA.

出版信息

Opt Express. 2009 Dec 21;17(26):24060-74. doi: 10.1364/OE.17.024060.

DOI:10.1364/OE.17.024060

PMID:20052118

Abstract

We solve the equations governing light propagation in a negative-index material with embedded nonlinearly saturable gain material using a frequency-domain model. We show that available gain materials can lead to complete loss compensation only if they are located in the regions where the field enhancement is maximal. We study the increased enhancement of the fields in the gain composite as well as in the metal inclusions and show analytically that the effective gain is determined by the average near-field enhancement.

摘要

我们使用频域模型求解了在嵌入非线性饱和增益材料的负折射率材料中光传播的控制方程。我们表明，只有当可用增益材料位于场增强最大的区域时，才能实现完全的损耗补偿。我们研究了增益复合材料以及金属夹杂物中场增强的增加情况，并通过分析表明有效增益由平均近场增强决定。