Abstract:
We investigate the response of gratings formed by subwavelength wires and slits in a dielectric medium. Transmission metallic gratings with subwavelength slits are known to produce enhanced transmitted intensity for certain resonant wavelengths. One of the mechanisms that produce these resonances is the excitation of waveguide modes inside the slits. We show that when the period of the structure is formed by several wires and slits (compound grating), new degrees of freedom are introduced for the phase distribution of the field inside the slits, allowing a new class of resonances. Phase resonances appear as sharp features in the transmitted/reflected response and are characterized by a significant enhancement of the interior field. We investigate the response of such systems under normal and oblique illumination and show that new phase modes appear in this last case. 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. We give numerical examples illustrating the effect produced by these resonances in the grating response. © 2006 IEEE.
Registro:
| Documento: |
Conferencia
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| Título: | Resonant response of metallic compound gratings with subwavelength slits |
| Autor: | Skigin, D.C.; Depine, R.A. |
| Ciudad: | Kharkov |
| Filiación: | Grupo de Electromagnetismo Aplicado, Departamento de Física, Ciudad Universitaria, Pabellón I, C1428EHA Buenos Aires, Argentina
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| Palabras clave: | Degrees of freedom (mechanics); Dielectric devices; Lighting; Metallic compounds; Photonic crystals; Resonance; Wave transmission; Wavelength; Forbidden channels; Subwavelength slits; Transmittance; Diffraction gratings |
| Año: | 2006
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| Página de inicio: | 71
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| Página de fin: | 76
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| Título revista: | 11th International Conference on Mathematical Methods in Electromagnetic Theory, MMET'06
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| Título revista abreviado: | Math Methods Electromag Theory MMET Conf Proc
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| Registro: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_14244049_v_n_p71_Skigin |
Referencias:
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- Fantino, A.N., Grosz, S.I., Skigin, D.C., Resonant effect in periodic gratings comprising a finite number of grooves in each period (2001) Phys. Rev. E, 64 (1), p. 016605
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- Skigin, D.C., Depine, R.A., Resonances on metallic compound transmission gratings with subwavelength wires and slits (2006) Opt. Commun, , in press, January
- Skigin, D.C., Fantino, A.N., Grosz, S.I., Phase resonances in compound metallic gratings (2003) J. Opt. A: Pure Appl. Opt, 5, pp. S129-S135
- Skigin, D.C., Depine, R.A., Narrow gaps for transmission through metallic structures gratings with subwavelength slits (2006) Phys. Rev. E, , submitted, April
- Lochbihler, H., Depine, R., Diffraction from highly conducting wire gratings (1993) Appl. Opt, 32, pp. 3459-3465
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Citas:
---------- APA ----------
Skigin, D.C. & Depine, R.A.
(2006)
. Resonant response of metallic compound gratings with subwavelength slits. 11th International Conference on Mathematical Methods in Electromagnetic Theory, MMET'06, 71-76.
Recuperado de https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_14244049_v_n_p71_Skigin [ ]
---------- CHICAGO ----------
Skigin, D.C., Depine, R.A.
"Resonant response of metallic compound gratings with subwavelength slits"
. 11th International Conference on Mathematical Methods in Electromagnetic Theory, MMET'06
(2006) : 71-76.
Recuperado de https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_14244049_v_n_p71_Skigin [ ]
---------- MLA ----------
Skigin, D.C., Depine, R.A.
"Resonant response of metallic compound gratings with subwavelength slits"
. 11th International Conference on Mathematical Methods in Electromagnetic Theory, MMET'06, 2006, pp. 71-76.
Recuperado de https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_14244049_v_n_p71_Skigin [ ]
---------- VANCOUVER ----------
Skigin, D.C., Depine, R.A. Resonant response of metallic compound gratings with subwavelength slits. Math Methods Electromag Theory MMET Conf Proc. 2006:71-76.
Available from: https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_14244049_v_n_p71_Skigin [ ]
