Enhanced transmission through metallic subwavelength slits

被引：0
作者：
Camacho-Gonzalez, G. F. [2 ]
Olmos-Lopez, O. [1 ]
Sumaya-Martinez, J. [2 ]
Mayorga-Rojas, M. [2 ]
机构：
[1] Inst Tecnol & Estudios Super Monterrey, Campus Toluca,Eduardo Monroy Cardenas 2000, Sn Antonio Buenavista To, Estado De Mexic, Mexico
[2] Univ Autonoma Estado Mexico, Fac Ciencias, Grp Opt, Inst Literario 100, Toluca 50000, Estado De Mexic, Mexico
来源：
EIGHTH SYMPOSIUM OPTICS IN INDUSTRY | 2011年 / 8287卷
关键词：
FDTD method; enhanced transmission phenomenon; plasmons; resonances; Rayleigh anomalies; Fabry-Perot resonances; surface plasmon polaritons; HOLE ARRAYS; OPTICAL-TRANSMISSION; GRATINGS; DIFFRACTION; SURFACES; WAVES; FILMS; RESONANCES; SCATTERING; LIGHT;
D O I：
10.1117/12.912917
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We present FDTD calculations for transmission of electromagnetic waves through periodic arrays of slits in a metallic screen. The results show resonant, frequency dependent, transmittance peaks for subwavelength widths of the slits which can be up to a factor of ten with respect to those out of resonance. Although our conclusions agree with previous work by Lezec and Thio as regards both the magnitude of the enhancement and the lack of contribution of surface plasmon polaritons of the metal surface to this effect, we derive an interpretation from a theory that deals with emerging beam-Rayleigh anomalies of the grating, and with Fabry-Perot resonances of the perforated screen considered as an effective medium.
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页数：10
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