Transmission enhancement through nanoscale metallic slit arrays from the visible to mid-infrared

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In this paper, we systematically investigate the transmission enhancement through nanoscale metallic slit arrays in the wavelength range from visible to mid-infrared. The far-field transmittance of the periodic structure is calculated using the rigorous coupled-wave analysis (RCWA). The electromagnetic field distribution in the near-field regime is analyzed to elucidate three mechanisms for transmission enhancement. Depending on the spectral region, the enhanced transmission can be attributed to Wood's anomaly, cavity resonance, and the effective-medium behavior. The effects of grating/slit geometry, polarization, and the plane-of-incidence orientation on the radiation transmission are also examined.
Publisher
AMER SCIENTIFIC PUBLISHERS
Issue Date
2008-02
Language
English
Article Type
Article
Keywords

SUBWAVELENGTH HOLE ARRAYS; SURFACE-RELIEF GRATINGS; COUPLED-WAVE ANALYSIS; OPTICAL-TRANSMISSION; EFFICIENT IMPLEMENTATION; RADIATIVE PROPERTIES; PERIODIC STRUCTURES; LIGHT TRANSMISSION; ANTIREFLECTION; POLARIZATION

Citation

JOURNAL OF COMPUTATIONAL AND THEORETICAL NANOSCIENCE, v.5, no.2, pp.201 - 213

ISSN
1546-1955
URI
http://hdl.handle.net/10203/91088
Appears in Collection
ME-Journal Papers(저널논문)
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