Properties of TM resonances on metallic slit gratings
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 formula...
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todo:paper_1559128X_v51_n11_p1729_Lochbihler2023-10-03T16:26:07Z Properties of TM resonances on metallic slit gratings Lochbihler, H. Depine, R.A. 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 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. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_1559128X_v51_n11_p1729_Lochbihler |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
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 |
| spellingShingle |
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 Lochbihler, H. Depine, R.A. Properties of TM resonances on metallic slit gratings |
| topic_facet |
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 |
| description |
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. |
| format |
JOUR |
| author |
Lochbihler, H. Depine, R.A. |
| author_facet |
Lochbihler, H. Depine, R.A. |
| author_sort |
Lochbihler, H. |
| title |
Properties of TM resonances on metallic slit gratings |
| title_short |
Properties of TM resonances on metallic slit gratings |
| title_full |
Properties of TM resonances on metallic slit gratings |
| title_fullStr |
Properties of TM resonances on metallic slit gratings |
| title_full_unstemmed |
Properties of TM resonances on metallic slit gratings |
| title_sort |
properties of tm resonances on metallic slit gratings |
| url |
http://hdl.handle.net/20.500.12110/paper_1559128X_v51_n11_p1729_Lochbihler |
| work_keys_str_mv |
AT lochbihlerh propertiesoftmresonancesonmetallicslitgratings AT depinera propertiesoftmresonancesonmetallicslitgratings |
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1782030718229020672 |