Narrow gaps for transmission through metallic structured gratings with subwavelength slits.
Phys Rev E Stat Nonlin Soft Matter Phys
; 74(4 Pt 2): 046606, 2006 Oct.
Article
em En
| MEDLINE
| ID: mdl-17155191
Transmission dips in the response of metallic compound gratings formed by several wires and slits in each period have been recently reported for normal illumination. These anomalies are generated by a particular arrangement of the magnetic field phases inside the subwavelength slits, and they are characterized by a significant enhancement of the interior field. We investigate the microwave response of such systems under non-normal illumination and show that new phase modes appear in this configuration. Contrary to the effect produced by a defect in a photonic crystal, these systems exhibit forbidden channels within a permitted band. We also found that the appearance of these resonances is not highly dependent on the slits' width and thickness, even though these parameters modify the overall transmittance.
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01-internacional
Base de dados:
MEDLINE
Idioma:
En
Revista:
Phys Rev E Stat Nonlin Soft Matter Phys
Assunto da revista:
BIOFISICA
/
FISIOLOGIA
Ano de publicação:
2006
Tipo de documento:
Article
País de afiliação:
Argentina
País de publicação:
Estados Unidos