微纳结构中表面等离子体激元及其局域表面等离子体产生机制的研究

Ling-Xi Hu , Min Hu , Sheng-Gang Liu
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引用次数: 1

摘要

研究了表面等离子体激元(SPPs)和局部表面等离子体激元(LSP)在不同结构中的模拟机理,包括金反射光栅(Au光栅)、带介电带光栅的金衬底(Au substrate光栅)和带金带光栅的纯电导体(PEC)衬底(Au ribbons光栅)。并给出了这些结构中Smith-Purcell辐射的特性。仿真结果表明,spp在Au基板光栅沟槽的底面被激发,LSP在Au带光栅沟槽和Au光栅沟槽的上表面被激发。由于优化光栅衍射辐射效率与优化Au衬底光栅中SPPs激发效率之间存在不可调和的矛盾,激发的SPPs只获得了40倍的辐射强度增强。而LSP增强结构克服了上述问题,获得了更好的辐射增强能力,在Au带光栅中获得了约200倍的增强,在Au光栅中获得了500倍以上的增强。本文的研究结果为在室温下开发从可见光到紫外线的微型、可集成、可调谐、高功率密度辐射源提供了一条途径。
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Investigation on surface plasmon polaritons and localized surface plasmon production mechanism in micro-nano structures

The simulation mechanism of surface plasmon polaritons (SPPs) and localized surface plasmon (LSP) in different structures was studied, including the Au reflection grating (Au grating), Au substrate with dielectric ribbons grating (Au substrate grating), and pure electric conductor (PEC) substrate with Au ribbons grating (Au ribbons grating). And the characteristics of the Smith-Purcell radiation in these structures were presented. Simulation results show that SPPs are excited on the bottom surface of Au substrate grating grooves and LSP is stimulated on the upper surface both of Au ribbons grating grooves and Au grating grooves. Owing to the irreconcilable contradiction between optimizing the grating diffraction radiation efficiency and optimizing the SPPs excitation efficiency in the Au substrate grating, only 40-times enhancement of the radiation intensity was obtained by excited SPPs. However, the LSP enhanced structure overcomes the above problem and gains much better radiation enhancement ability, with about 200-times enhancement obtained in the Au ribbons grating and more than 500-times enhancement obtained in the Au grating. The results presented here provide a way of developing miniature, integratable, tunable, high-power-density radiation sources from visible light to ultraviolet rays at room temperature.

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来源期刊
Journal of Electronic Science and Technology
Journal of Electronic Science and Technology Engineering-Electrical and Electronic Engineering
CiteScore
4.30
自引率
0.00%
发文量
1362
审稿时长
99 days
期刊介绍: JEST (International) covers the state-of-the-art achievements in electronic science and technology, including the most highlight areas: ¨ Communication Technology ¨ Computer Science and Information Technology ¨ Information and Network Security ¨ Bioelectronics and Biomedicine ¨ Neural Networks and Intelligent Systems ¨ Electronic Systems and Array Processing ¨ Optoelectronic and Photonic Technologies ¨ Electronic Materials and Devices ¨ Sensing and Measurement ¨ Signal Processing and Image Processing JEST (International) is dedicated to building an open, high-level academic journal supported by researchers, professionals, and academicians. The Journal has been fully indexed by Ei INSPEC and has published, with great honor, the contributions from more than 20 countries and regions in the world.
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