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Plasmonic photoconductive antennas based on Bi<sub>2-x</sub>Sb<sub>x</sub>Se<sub>y</sub>Te<sub>3-y</sub> topological insulatorsтезисы доклада
- Авторы: Kovaleva P.M., Kuznetsov K.A., Kuznetsov P.I., Lavrukhin D.V., Galiev R.R., Ponomarev D.S., Kitaeva G.Kh
- Сборник: 2024 International Conference Laser Optics (ICLO)
- Тезисы
- Год издания: 2024
- Место издания: IEEE
- Первая страница: 117
- Последняя страница: 117
- DOI: 10.1109/iclo59702.2024.10623988
- Аннотация: In this work, we present the first experimental observation of the enhanced THz radiation in plasmonic photoconductive antenna (PCA) based on Bi2−xSbxSeyTe3-y topological insulator (TI). By using numerical simulations, we optimized the plasmonic grating geometry to maximize optical light transmission, stimulating efficient surface plasmon-polariton (SPP) excitations along the TI/grating interface. We fabricated two equal PCAs, the one of which contains high-aspect ratio plasmonic grating. The THz spectral measurements showed a ∼9-fold enhancement of the emitted THz power in the plasmonic TI-based PCA. The results of our study can open a pathway toward time-domain plasmonics-enhanced THz setups utilizing innovative photoconductive materials.
- Добавил в систему: Ковалева Полина Михайловна