Electromagnetically induced transparency control in terahertz metasurfaces based on bright-bright mode coupling
We demonstrate a classical analog of electromagnetically induced transparency (EIT) in a highly flexible planar terahertz metamaterial (MM) comprised of three-gap split-ring resonators. The keys to achieve EIT in this system are the frequency detuning and hybridization processes between two bright m...
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| Veröffentlicht in: | Physical review. B 2018-04, Vol.97 (15), Article 155403 |
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| container_title | Physical review. B |
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| creator | Yahiaoui, R. Burrow, J. A. Mekonen, S. M. Sarangan, A. Mathews, J. Agha, I. Searles, T. A. |
| description | We demonstrate a classical analog of electromagnetically induced transparency (EIT) in a highly flexible planar terahertz metamaterial (MM) comprised of three-gap split-ring resonators. The keys to achieve EIT in this system are the frequency detuning and hybridization processes between two bright modes coexisting in the same unit cell as opposed to bright-dark modes. We present experimental verification of two bright modes coupling for a terahertz EIT-MM in the context of numerical results and theoretical analysis based on a coupled Lorentz oscillator model. In addition, a hybrid variation of the EIT-MM is proposed and implemented numerically to dynamically tune the EIT window by incorporating photosensitive silicon pads in the split gap region of the resonators. As a result, this hybrid MM enables the active optical control of a transition from the on state (EIT mode) to the off state (dipole mode). |
| doi_str_mv | 10.1103/PhysRevB.97.155403 |
| format | Article |
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In addition, a hybrid variation of the EIT-MM is proposed and implemented numerically to dynamically tune the EIT window by incorporating photosensitive silicon pads in the split gap region of the resonators. As a result, this hybrid MM enables the active optical control of a transition from the on state (EIT mode) to the off state (dipole mode).</description><identifier>ISSN: 2469-9950</identifier><identifier>EISSN: 2469-9969</identifier><identifier>DOI: 10.1103/PhysRevB.97.155403</identifier><language>eng</language><publisher>College Park: American Physical Society</publisher><subject>Active control ; Coupling ; Mathematical models ; Metamaterials ; Metasurfaces ; Optical control ; Photosensitivity ; Resonators ; Unit cell</subject><ispartof>Physical review. 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| subjects | Active control Coupling Mathematical models Metamaterials Metasurfaces Optical control Photosensitivity Resonators Unit cell |
| title | Electromagnetically induced transparency control in terahertz metasurfaces based on bright-bright mode coupling |
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