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Determination of the Excitation and Coupling Rates Between Light Emitters and Surface Plasmon Polaritons
Published on: July 21, 2018
A method to design transmission resonances through subwavelength apertures based on designed surface plasmons
Jinsong Liu1, Lan Ding, Kejia Wang
1Wuhan National Laboratory for Optoelectronics, School of Optoelectronic Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China. jsliu4508@vip.sina.com
Optics Express
|August 6, 2009
Summary
This study introduces a novel plasmonic metamaterial for enhanced electromagnetic wave transmission. The designed surface plasmons enable tunable transmission resonances, particularly useful in terahertz and microwave applications.
Area of Science:
- Plasmonics
- Metamaterials
- Electromagnetics
Background:
- Subwavelength apertures in metallic foils are crucial for controlling electromagnetic wave transmission.
- Surface plasmons offer unique optical properties but require precise engineering for specific applications.
Purpose of the Study:
- To propose and analyze a plasmonic metamaterial with periodic rectangle holes for enhanced electromagnetic wave transmission.
- To explore the role of designed surface plasmons in supporting transmission resonances through subwavelength apertures.
- To demonstrate the tunability of peak transmission wavelengths by controlling hole parameters.
Main Methods:
- Fabrication of a metallic foil with periodic rectangle holes of finite depth.
- Numerical analysis of surface plasmon excitation and propagation within the holes.
- Investigation of electromagnetic wave transmission properties through the metamaterial structure.
Main Results:
- Designed surface plasmons sustained by the holes significantly enhance wave transmission through subwavelength apertures.
- Transmission resonances are observed and directly linked to the properties of the engineered surface plasmons.
- Peak transmission wavelengths can be precisely controlled by adjusting the geometrical and optical parameters of the rectangle holes.
Conclusions:
- The proposed plasmonic metamaterial offers a method for designing specific transmission wavelengths.
- This approach has potential applications in advanced optical engineering, particularly in the terahertz (THz) and microwave frequency regimes.
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