Oblique surface waves at an interface between a metal-dielectric superlattice and an isotropic dielectric
Abstract
We investigate the existence and dispersion characteristics of surface waves that propagate at an interface between a metal-dielectric superlattice and an isotropic dielectric. Within the long-wavelength limit, when the effective-medium (EM) approximation is valid, the superlattice behaves like a uniaxial plasmonic crystal with the main optical axes perpendicular to the metal-dielectric interfaces. We demonstrate that if such a semi-infinite plasmonic crystal is cut normally to the layer interfaces and brought into contact with a semi-infinite dielectric, a new type of surface mode can appear. Such modes can propagate obliquely to the optical axes if favorable conditions regarding the thickness of the layers and the dielectric permittivities of the constituent materials are met. We show that losses within the metallic layers can be substantially reduced by making the layers sufficiently thin. At the same time, a dramatic enlargement of the range of angles for oblique propagation of the... new surface modes is observed. This can lead, however, to field non-locality and consequently to failure of the EM approximation.
Keywords:
Plasmons / Superlattices / Surface waves / PhotonicsSource:
Physica Scripta, 2012, 2012, T149, 014041-Publisher:
- IOP Publishing
Funding / projects:
- The Qatar National Research Fund (NPRP 09-462-1-074).
- Fabrication and characterization of nano-photonic functional structrues in biomedicine and informatics (RS-45016)
- Micro- Nanosystems and Sensors for Electric Power and Process Industry and Environmental Protection (RS-32008)
- The Spanish Ministry of Science and Innovation through grant no. TEC2009-11635
DOI: 10.1088/0031-8949/2012/T149/014041
ISSN: 1402-4896
WoS: 000303523500042
Scopus: 2-s2.0-84860477044
Collections
Institution/Community
IHTMTY - JOUR AU - Vuković, Slobodan M. AU - Miret, Juan Jose AU - Zapata-Rodrigez, Carlos J. AU - Jakšić, Zoran PY - 2012 UR - https://cer.ihtm.bg.ac.rs/handle/123456789/4727 AB - We investigate the existence and dispersion characteristics of surface waves that propagate at an interface between a metal-dielectric superlattice and an isotropic dielectric. Within the long-wavelength limit, when the effective-medium (EM) approximation is valid, the superlattice behaves like a uniaxial plasmonic crystal with the main optical axes perpendicular to the metal-dielectric interfaces. We demonstrate that if such a semi-infinite plasmonic crystal is cut normally to the layer interfaces and brought into contact with a semi-infinite dielectric, a new type of surface mode can appear. Such modes can propagate obliquely to the optical axes if favorable conditions regarding the thickness of the layers and the dielectric permittivities of the constituent materials are met. We show that losses within the metallic layers can be substantially reduced by making the layers sufficiently thin. At the same time, a dramatic enlargement of the range of angles for oblique propagation of the new surface modes is observed. This can lead, however, to field non-locality and consequently to failure of the EM approximation. PB - IOP Publishing T2 - Physica Scripta T1 - Oblique surface waves at an interface between a metal-dielectric superlattice and an isotropic dielectric VL - 2012 IS - T149 SP - 014041 DO - 10.1088/0031-8949/2012/T149/014041 ER -
@article{ author = "Vuković, Slobodan M. and Miret, Juan Jose and Zapata-Rodrigez, Carlos J. and Jakšić, Zoran", year = "2012", abstract = "We investigate the existence and dispersion characteristics of surface waves that propagate at an interface between a metal-dielectric superlattice and an isotropic dielectric. Within the long-wavelength limit, when the effective-medium (EM) approximation is valid, the superlattice behaves like a uniaxial plasmonic crystal with the main optical axes perpendicular to the metal-dielectric interfaces. We demonstrate that if such a semi-infinite plasmonic crystal is cut normally to the layer interfaces and brought into contact with a semi-infinite dielectric, a new type of surface mode can appear. Such modes can propagate obliquely to the optical axes if favorable conditions regarding the thickness of the layers and the dielectric permittivities of the constituent materials are met. We show that losses within the metallic layers can be substantially reduced by making the layers sufficiently thin. At the same time, a dramatic enlargement of the range of angles for oblique propagation of the new surface modes is observed. This can lead, however, to field non-locality and consequently to failure of the EM approximation.", publisher = "IOP Publishing", journal = "Physica Scripta", title = "Oblique surface waves at an interface between a metal-dielectric superlattice and an isotropic dielectric", volume = "2012", number = "T149", pages = "014041", doi = "10.1088/0031-8949/2012/T149/014041" }
Vuković, S. M., Miret, J. J., Zapata-Rodrigez, C. J.,& Jakšić, Z.. (2012). Oblique surface waves at an interface between a metal-dielectric superlattice and an isotropic dielectric. in Physica Scripta IOP Publishing., 2012(T149), 014041. https://doi.org/10.1088/0031-8949/2012/T149/014041
Vuković SM, Miret JJ, Zapata-Rodrigez CJ, Jakšić Z. Oblique surface waves at an interface between a metal-dielectric superlattice and an isotropic dielectric. in Physica Scripta. 2012;2012(T149):014041. doi:10.1088/0031-8949/2012/T149/014041 .
Vuković, Slobodan M., Miret, Juan Jose, Zapata-Rodrigez, Carlos J., Jakšić, Zoran, "Oblique surface waves at an interface between a metal-dielectric superlattice and an isotropic dielectric" in Physica Scripta, 2012, no. T149 (2012):014041, https://doi.org/10.1088/0031-8949/2012/T149/014041 . .