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Abstract:

Electromagnetic resonances on metallic slit gratings induced by TM polarized incident light have been investigated and physically interpreted. We have developed an electromagnetic model imposing surface impedance boundary conditions on the metallic grating surface from which we derive simple formulas explaining all physical properties of these resonances. It is demonstrated that Fabry-Perot (or cavity) resonances are generated by the zeroth slit mode yielding extraordinary transmission. For very narrow slits, the resonant H-field is squeezed to the slit walls and causes enhanced power losses. The excitation of surface plasmon polaritons (SPPs), however, is generated by two mode coupling. SPPs are linked to sharp absorption peaks and dips in transmittance. It is shown that these phenomena are primarily caused by the interaction of the electromagnetic fields with the finite conducting slit walls. These findings have been confirmed by measured transmittance data of gold gratings with periods of 0.5 μm, 1 μm, and 2 μm. © 2012 Optical Society of America.

Registro:

Documento: Artículo
Título:Properties of TM resonances on metallic slit gratings
Autor:Lochbihler, H.; Depine, R.A.
Filiación:Louisenthal GmbH, P. O. Box 1185, 83701 Gmund am Tegernsee, Germany
Istituto de Física de Buenos Aires, Facultad de Ciencias Exactas, Universidad de Buenos Aires, Pabellón I, C1428EHA Buenos Aires, Argentina
Palabras clave:Diffraction gratings; Electromagnetic fields; Electromagnetic wave polarization; Fabry-Perot interferometers; Resonance; Surface plasmon resonance; Absorption peaks; Electromagnetic modeling; Electromagnetic resonance; Extraordinary transmission; Incident light; Metallic gratings; Surface impedance boundary condition; Surface plasmon polaritons; Electromagnetic wave transmission
Año:2012
Volumen:51
Número:11
Página de inicio:1729
Página de fin:1741
DOI: http://dx.doi.org/10.1364/AO.51.001729
Título revista:Applied Optics
Título revista abreviado:Appl. Opt.
ISSN:1559128X
CODEN:APOPA
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_1559128X_v51_n11_p1729_Lochbihler

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Citas:

---------- APA ----------
Lochbihler, H. & Depine, R.A. (2012) . Properties of TM resonances on metallic slit gratings. Applied Optics, 51(11), 1729-1741.
http://dx.doi.org/10.1364/AO.51.001729
---------- CHICAGO ----------
Lochbihler, H., Depine, R.A. "Properties of TM resonances on metallic slit gratings" . Applied Optics 51, no. 11 (2012) : 1729-1741.
http://dx.doi.org/10.1364/AO.51.001729
---------- MLA ----------
Lochbihler, H., Depine, R.A. "Properties of TM resonances on metallic slit gratings" . Applied Optics, vol. 51, no. 11, 2012, pp. 1729-1741.
http://dx.doi.org/10.1364/AO.51.001729
---------- VANCOUVER ----------
Lochbihler, H., Depine, R.A. Properties of TM resonances on metallic slit gratings. Appl. Opt. 2012;51(11):1729-1741.
http://dx.doi.org/10.1364/AO.51.001729