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Abstract:

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.

Registro:

Documento: Artículo
Título:Influence of finite conductivity on the excitation of phase resonances in metallic surfaces with cavities of circular cross sections
Autor:Valencia, C.I.; Skigin, D.C.
Filiación:Facultad de Ciencias, Universidad Autónoma de Baja California, Km. 107 Carretera Tijuana-Ensenada, Ensenada, BC 22860, Mexico
Grupo de Electromagnetismo Aplicado, Departamento de Física, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Buenos Aires, Argentina
Consejo Nacional de Lnvestigaciones Científicas y Técnicas, Facultad de Ciencias Exactas y Naturales, Instituto de Física de Buenos Aires (IFIBA), Universidad de Buenos Aires, Buenos Aires, Argentina
Palabras clave: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
Año:2016
Volumen:55
Número:34
Página de inicio:9659
Página de fin:9667
DOI: http://dx.doi.org/10.1364/AO.55.009659
Título revista:Applied Optics
Título revista abreviado:Appl. Opt.
ISSN:1559128X
CODEN:APOPA
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_1559128X_v55_n34_p9659_Valencia

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Citas:

---------- APA ----------
Valencia, C.I. & Skigin, D.C. (2016) . Influence of finite conductivity on the excitation of phase resonances in metallic surfaces with cavities of circular cross sections. Applied Optics, 55(34), 9659-9667.
http://dx.doi.org/10.1364/AO.55.009659
---------- CHICAGO ----------
Valencia, C.I., Skigin, D.C. "Influence of finite conductivity on the excitation of phase resonances in metallic surfaces with cavities of circular cross sections" . Applied Optics 55, no. 34 (2016) : 9659-9667.
http://dx.doi.org/10.1364/AO.55.009659
---------- MLA ----------
Valencia, C.I., Skigin, D.C. "Influence of finite conductivity on the excitation of phase resonances in metallic surfaces with cavities of circular cross sections" . Applied Optics, vol. 55, no. 34, 2016, pp. 9659-9667.
http://dx.doi.org/10.1364/AO.55.009659
---------- VANCOUVER ----------
Valencia, C.I., Skigin, D.C. Influence of finite conductivity on the excitation of phase resonances in metallic surfaces with cavities of circular cross sections. Appl. Opt. 2016;55(34):9659-9667.
http://dx.doi.org/10.1364/AO.55.009659