基于增益媒质的亚波长纳米阵列超传输特性研究

孙龙; 牛凯坤; 冯大政; 王石语; 邢孟道

doi:10.3788/fgxb20194003.0366

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基于增益媒质的亚波长纳米阵列超传输特性研究

器件制备及器件物理 | 更新时间：2020-08-12

- 基于增益媒质的亚波长纳米阵列超传输特性研究
- Extraordinary Optical Transmission Coupled to A Gain Medium Based on The Subwavelength Nanostructure
- 发光学报 2019年40卷第3期页码：366-373
- 作者机构：
  
  1. 西安电子科技大学雷达信号处理国家重点实验室,陕西西安,710071
  2. 西安电子科技大学信息感知技术协同创新中心,陕西西安,710071
  3. 中国电子科技集团公司第三十八研究所,安徽合肥,230088
  4. 安徽大学信号与信息处理教育部重点实验室,安徽合肥,230039
  5. 西安电子科技大学技术物理学院,陕西西安,710071
- 作者简介：
- 基金信息：
  
  国家自然科学基金（61601166，61701001，61701003）;国家自然科学基金优秀青年科学基金（61722101）;安徽省高等学校自然科学研究项目（KJ2017ZD02，KJ2017ZD51）资助
- DOI：10.3788/fgxb20194003.0366
  中图分类号： O441.6
- 纸质出版日期：2019-3-5，
  
  网络出版日期：2018-6-27，
  
  收稿日期：2018-5-1，
  
  修回日期：2018-6-20，
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孙龙, 牛凯坤, 冯大政等. 基于增益媒质的亚波长纳米阵列超传输特性研究[J]. 发光学报, 2019,40(3): 366-373

SUN Long, NIU Kai-kun, FENG Da-zheng etc. Extraordinary Optical Transmission Coupled to A Gain Medium Based on The Subwavelength Nanostructure[J]. Chinese Journal of Luminescence, 2019,40(3): 366-373
孙龙, 牛凯坤, 冯大政等. 基于增益媒质的亚波长纳米阵列超传输特性研究[J]. 发光学报, 2019,40(3): 366-373 DOI： 10.3788/fgxb20194003.0366.

SUN Long, NIU Kai-kun, FENG Da-zheng etc. Extraordinary Optical Transmission Coupled to A Gain Medium Based on The Subwavelength Nanostructure[J]. Chinese Journal of Luminescence, 2019,40(3): 366-373 DOI： 10.3788/fgxb20194003.0366.

摘要

增益媒质因其优良的放大特性和广阔的应用前景吸引了国内外学者的广泛关注，然而，激发增益媒质补偿欧姆损耗需要较强的外部能量，极大地限制了增益媒质的发展前景。本文使用辅助位微分方程的时域有限差分方法研究了麦克斯韦方程与半经典的电子速率方程相耦合的自洽仿真过程，并基于四能级原子系统描述的增益媒质和异常光传输现象间的耦合机制，提出了一种新颖的含亚波长周期裂缝的增益/金属/增益纳米阵列结构。研究结果表明，本文提出的纳米结构可以使用较低外部能量实现完全补偿欧姆损耗的目的。该结果对深入了解纳米结构和增益媒质之间的相互作用有着重要的意义。

Abstract

As a focus on the study of metamaterials

the gain medium attracts a wide range of attention due to its excellent amplification characteristics. However

high external energy is needed to excite the gain material to compensate loss or create laser

which greatly limits the practical application of the gain materials. We investigate a computational scheme allowing for a self-consistent treatment of periodic arrays of subwavelength apertures coupled to a gain material incorporated into the nanostructure. Taking advantage of the amplification of extraordinary optical transmission(EOT) phenomena

the resonant electric-field intensity is enhanced associated with the effect of surface plasmon polariton(SPP). We present a simulation framework allowing for EOT coupled to gain media

which enables complete Ohmic loss compensation by using a moderate pump intensity level. The active gain media is represented with four-level atomic system by solving the semiclassical electronic rate equations. Finite-difference time-domain (FDTD) method incorporated with auxiliary differential equation is used to simulate electromagnetic field. Our results can be used as instruction for the realistic experiments

and provide a deep insight into the interaction between nanostructure and gain materials.

关键词

增益媒质时域有限差分方法异常光学传输

Keywords

gain materialfinite-difference time-domain(FDTD) methodextraordinary optical transmission

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