Large field enhancement and perfect absorption by coupling between dark plasmon mode and surface plasmon polaritons

2018 ◽  
Vol 47 (3) ◽  
pp. 301-306
Author(s):  
Nian Gao ◽  
Junqiao Wang ◽  
Jia Zhang ◽  
Shu Chen ◽  
Erjun Liang ◽  
...  
2015 ◽  
Vol 2015 ◽  
pp. 1-7 ◽  
Author(s):  
Senfeng Lai ◽  
Wen Wu ◽  
Wenhua Gu

This paper proposed that ultraviolet beam could be focused by gallium arsenide (GaAs) through direct excitation of surface plasmon polaritons. Both theoretical analysis and computer simulation showed that GaAs could be a reasonably good plasmonic material in the air in the deep ultraviolet waveband. With a properly designed bull’s eye structure etched in GaAs, the ultraviolet electric field could be enhanced to as high as 20 times the incident value, and the full-width-half-maximum (FWHM) of the light beam could be shrunk from ~48° to ~6°. As a plasmonic material, GaAs was compared to Ag and Al. Within the studied ultraviolet waveband, the field enhancement in GaAs was much stronger than Ag but not as high as Al.


2004 ◽  
Vol 18 (23) ◽  
pp. 1181-1188 ◽  
Author(s):  
XIANGANG LUO ◽  
HAO WANG ◽  
JIEPING SHI ◽  
HANMIN YAO

The transmission properties of rectangular one-dimensional unperforated metallic periodic structures for frequencies close to the surface plasmon band are investigated experimentally and theoretically. The results reveal that it is possible to obtain unexpectedly large transmissions through thick unperforated metallic structures. The mechanisms of enhanced transmissions are attributed to resonant excitations of three kinds of plasmon radiations: coupled surface plasmon polaritons, horizontal localized groove plasmon mode, and vertical localized groove plasmons mode. Once the surface plasmon polaritons and the vertical groove plasmon modes are excited simultaneously, the transmission approaches to maximum at the coincident condition.


2011 ◽  
Vol 181 (3) ◽  
pp. 305 ◽  
Author(s):  
V.B. Zon ◽  
B.A. Zon ◽  
V.G. Klyuev ◽  
A.N. Latyshev ◽  
D.A. Minakov ◽  
...  

2020 ◽  
Vol 14 (1) ◽  
pp. 015002
Author(s):  
Xinguang Hu ◽  
Cheng Zeng ◽  
Jinsong Xia ◽  
Yunji Meng

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