Photonic Wannier-Stark Ladder from Coupled Electromagnetic Cavities
We have investigated the photonic Wannier-Stark ladder in the system of coupled electromagnetic cavities, which consists of a stack of metallic plates structured with subwavelength apertures and where the tilted potential effect is mimicked by imposing the gradient variation of refractive index. Mak...
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| Format: | Article |
| Language: | English |
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Wiley
2015-01-01
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| Series: | International Journal of Antennas and Propagation |
| Online Access: | http://dx.doi.org/10.1155/2015/360359 |
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| author | Shahzad Anwar Sucheng Li Weixin Lu Bo Hou |
| author_facet | Shahzad Anwar Sucheng Li Weixin Lu Bo Hou |
| author_sort | Shahzad Anwar |
| collection | DOAJ |
| description | We have investigated the photonic Wannier-Stark ladder in the system of coupled electromagnetic cavities, which consists of a stack of metallic plates structured with subwavelength apertures and where the tilted potential effect is mimicked by imposing the gradient variation of refractive index. Making an analogy to its quantum counterpart and assuming the translational property of its solutions, we have shown the photonic ladder has the eigenenergies, that is, frequencies, in a geometrical series. Within the approximation of small gradient, the ladder states manifest the equidistant frequency spacing in the spectrum. By both analytical derivation and numerical simulation, we have illustrated the geometrically progressed energies of the photonic Wannier-Stark ladder. |
| format | Article |
| id | doaj-art-e443beea076a405dbbe907902d4415fd |
| institution | Kabale University |
| issn | 1687-5869 1687-5877 |
| language | English |
| publishDate | 2015-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Antennas and Propagation |
| spelling | doaj-art-e443beea076a405dbbe907902d4415fd2025-02-03T05:57:12ZengWileyInternational Journal of Antennas and Propagation1687-58691687-58772015-01-01201510.1155/2015/360359360359Photonic Wannier-Stark Ladder from Coupled Electromagnetic CavitiesShahzad Anwar0Sucheng Li1Weixin Lu2Bo Hou3College of Physics, Optoelectronics and Energy and Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, 1 Shizi Street, Suzhou 215006, ChinaCollege of Physics, Optoelectronics and Energy and Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, 1 Shizi Street, Suzhou 215006, ChinaCollege of Physics, Optoelectronics and Energy and Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, 1 Shizi Street, Suzhou 215006, ChinaCollege of Physics, Optoelectronics and Energy and Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, 1 Shizi Street, Suzhou 215006, ChinaWe have investigated the photonic Wannier-Stark ladder in the system of coupled electromagnetic cavities, which consists of a stack of metallic plates structured with subwavelength apertures and where the tilted potential effect is mimicked by imposing the gradient variation of refractive index. Making an analogy to its quantum counterpart and assuming the translational property of its solutions, we have shown the photonic ladder has the eigenenergies, that is, frequencies, in a geometrical series. Within the approximation of small gradient, the ladder states manifest the equidistant frequency spacing in the spectrum. By both analytical derivation and numerical simulation, we have illustrated the geometrically progressed energies of the photonic Wannier-Stark ladder.http://dx.doi.org/10.1155/2015/360359 |
| spellingShingle | Shahzad Anwar Sucheng Li Weixin Lu Bo Hou Photonic Wannier-Stark Ladder from Coupled Electromagnetic Cavities International Journal of Antennas and Propagation |
| title | Photonic Wannier-Stark Ladder from Coupled Electromagnetic Cavities |
| title_full | Photonic Wannier-Stark Ladder from Coupled Electromagnetic Cavities |
| title_fullStr | Photonic Wannier-Stark Ladder from Coupled Electromagnetic Cavities |
| title_full_unstemmed | Photonic Wannier-Stark Ladder from Coupled Electromagnetic Cavities |
| title_short | Photonic Wannier-Stark Ladder from Coupled Electromagnetic Cavities |
| title_sort | photonic wannier stark ladder from coupled electromagnetic cavities |
| url | http://dx.doi.org/10.1155/2015/360359 |
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