亚波长金属狭缝中局域电磁场的研究

Proceedings of the YSU A: Physical and Mathematical Sciences Pub Date : 2017-12-15 DOI:10.46991/pysu:a/2017.51.3.269

Shant Arakelyan

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引用次数: 0

摘要

利用热弹性光学指示显微镜(TEOIM)研究了亚波长金属狭缝中的电磁场定位。作为TEOIM系统的指示器，采用尺寸为$20\ × 20\ × 0.5~(mm)$的玻片，在玻片表面采用真空蒸发技术汽化厚度为$20~nm$的$\mathrm{Al}$薄膜，其狭缝宽度为$ 10 ~ 50~\ μ m$，用$50~ GHz$发生器在狭缝中产生强局域电磁场，并用TEOIM进行显示。另外，用COMSOL Multiphysics$^{\circledR}$对系统的波导特性进行了表征。仿真结果与可视化数据集吻合较好。

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INVESTIGATION OF LOCALIZED ELECTROMAGNETIC FIELD IN A SUBWAVELENGTH METALLIC SLIT

Electromagnetic field localization in a subwavelength metallic slit by a thermo-elastic optical indicator microscope (TEOIM) was investigated. As an indicator for the TEOIM system a slide glass with sizes of $20\times 20\times0.5~(mm)$ was used, on the surface of which an $\mathrm{Al}$ film of $20~nm$ thickness was vaporized using the vacuum evaporation technique, with various slit width $(10-50~\mu m).$ Strongly localized electromagnetic field has been exited in the slits by $50~ GHz$ generator and was visualized by a TEOIM. The waveguide properties of the system were characterized by COMSOL Multiphysics$^{\circledR}$ additionally. The simulation results are in good agreement with the visualization data set.

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Proceedings of the YSU A: Physical and Mathematical Sciences

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