Abstract
In this talk, we present the concept of temporal parity-time-symmetric metasurfaces. In contrast to spatial parity-time symmetric structure, here, the metasurface exhibits gain and loss in the temporal domain, and the gain and loss are virtually created by time-varying lossless reactive components. It is found that the alternation of gain and loss in the temporal domain results in the closing of the momentum bandgap. At the exceptional point where the size of the momentum bandgap becomes zero, the metasurface exhibits an exotic response for pulse illuminations, expressed in the localization and linear growing of the pulse energy.
| Original language | English |
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| Title of host publication | 17th International Congress on Artificial Materials for Novel Wave Phenomena, Metamaterials 2023 |
| Publisher | IEEE |
| Pages | 427-430 |
| Number of pages | 4 |
| ISBN (Electronic) | 979-8-3503-3244-5 |
| DOIs | |
| Publication status | Published - 2023 |
| MoE publication type | A4 Conference publication |
| Event | International Congress on Artificial Materials for Novel Wave Phenomena - Crete, Chania, Greece Duration: 11 Sept 2023 → 16 Sept 2023 Conference number: 17 https://congress2023.metamorphose-vi.org/ |
Publication series
| Name | International congress on advanced electromagnetic materials in microwaves and optics |
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| ISSN (Electronic) | 2573-2706 |
Conference
| Conference | International Congress on Artificial Materials for Novel Wave Phenomena |
|---|---|
| Abbreviated title | Metamaterials |
| Country/Territory | Greece |
| City | Chania |
| Period | 11/09/2023 → 16/09/2023 |
| Other | Conference number 193986 |
| Internet address |
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Aalto Electronics-ICT
Ryynänen, J. (Manager)
Department of Electronics and NanoengineeringFacility/equipment: Facility