Influence of finite conductivity on the excitation of phase resonances in metallic surfaces with cavities of circular cross sections
Phase resonances have been investigated in the last few years, not only because of their striking features, such as extremely high quality factor and huge enhancement of the electromagnetic field inside cavities/grooves, but also for their promising applications. However, taking into account that th...
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paper:paper_1559128X_v55_n34_p9659_Valencia2023-06-08T16:23:42Z Influence of finite conductivity on the excitation of phase resonances in metallic surfaces with cavities of circular cross sections Valencia, Claudio Ismael Skigin, Diana Carina Boundary conditions Electromagnetic fields Surface measurement Circular cross-sections Conducting structure Electromagnetic response Finite conductivity High quality factors Metallic surface Shorter wavelength Surface impedance boundary condition Resonance Phase resonances have been investigated in the last few years, not only because of their striking features, such as extremely high quality factor and huge enhancement of the electromagnetic field inside cavities/grooves, but also for their promising applications. However, taking into account that these resonances are more efficiently excited in highly conducting structures, most of the studies have been devoted to explore this phenomenon at wavelengths in the infrared or larger, using different approaches for the boundary conditions. In this paper, we investigate the validity of the perfect conductor approximation and the surface impedance boundary condition to appropriately represent the electromagnetic response of a metallic surface comprising a finite number of subwavelength cavities of circular cross sections. Far- and near-field plots are shown and analyzed in order to investigate the validity ranges and discuss to what extent phase resonances can be excited at shorter wavelengths in these structures. © 2016 Optical Society of America. Fil:Valencia, C.I. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Skigin, D.C. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2016 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_1559128X_v55_n34_p9659_Valencia http://hdl.handle.net/20.500.12110/paper_1559128X_v55_n34_p9659_Valencia |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
Boundary conditions Electromagnetic fields Surface measurement Circular cross-sections Conducting structure Electromagnetic response Finite conductivity High quality factors Metallic surface Shorter wavelength Surface impedance boundary condition Resonance |
| spellingShingle |
Boundary conditions Electromagnetic fields Surface measurement Circular cross-sections Conducting structure Electromagnetic response Finite conductivity High quality factors Metallic surface Shorter wavelength Surface impedance boundary condition Resonance Valencia, Claudio Ismael Skigin, Diana Carina Influence of finite conductivity on the excitation of phase resonances in metallic surfaces with cavities of circular cross sections |
| topic_facet |
Boundary conditions Electromagnetic fields Surface measurement Circular cross-sections Conducting structure Electromagnetic response Finite conductivity High quality factors Metallic surface Shorter wavelength Surface impedance boundary condition Resonance |
| description |
Phase resonances have been investigated in the last few years, not only because of their striking features, such as extremely high quality factor and huge enhancement of the electromagnetic field inside cavities/grooves, but also for their promising applications. However, taking into account that these resonances are more efficiently excited in highly conducting structures, most of the studies have been devoted to explore this phenomenon at wavelengths in the infrared or larger, using different approaches for the boundary conditions. In this paper, we investigate the validity of the perfect conductor approximation and the surface impedance boundary condition to appropriately represent the electromagnetic response of a metallic surface comprising a finite number of subwavelength cavities of circular cross sections. Far- and near-field plots are shown and analyzed in order to investigate the validity ranges and discuss to what extent phase resonances can be excited at shorter wavelengths in these structures. © 2016 Optical Society of America. |
| author |
Valencia, Claudio Ismael Skigin, Diana Carina |
| author_facet |
Valencia, Claudio Ismael Skigin, Diana Carina |
| author_sort |
Valencia, Claudio Ismael |
| title |
Influence of finite conductivity on the excitation of phase resonances in metallic surfaces with cavities of circular cross sections |
| title_short |
Influence of finite conductivity on the excitation of phase resonances in metallic surfaces with cavities of circular cross sections |
| title_full |
Influence of finite conductivity on the excitation of phase resonances in metallic surfaces with cavities of circular cross sections |
| title_fullStr |
Influence of finite conductivity on the excitation of phase resonances in metallic surfaces with cavities of circular cross sections |
| title_full_unstemmed |
Influence of finite conductivity on the excitation of phase resonances in metallic surfaces with cavities of circular cross sections |
| title_sort |
influence of finite conductivity on the excitation of phase resonances in metallic surfaces with cavities of circular cross sections |
| publishDate |
2016 |
| url |
https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_1559128X_v55_n34_p9659_Valencia http://hdl.handle.net/20.500.12110/paper_1559128X_v55_n34_p9659_Valencia |
| work_keys_str_mv |
AT valenciaclaudioismael influenceoffiniteconductivityontheexcitationofphaseresonancesinmetallicsurfaceswithcavitiesofcircularcrosssections AT skigindianacarina influenceoffiniteconductivityontheexcitationofphaseresonancesinmetallicsurfaceswithcavitiesofcircularcrosssections |
| _version_ |
1768546134062530560 |