دورية أكاديمية
Color coded metadevices toward programmed terahertz switching
| العنوان: | Color coded metadevices toward programmed terahertz switching |
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| المؤلفون: | Weibao He, Xiang’ai Cheng, Siyang Hu, Ziheng Ren, Zhongyi Yu, Shun Wan, Yuze Hu, Tian Jiang |
| المصدر: | Light: Science & Applications, Vol 13, Iss 1, Pp 1-10 (2024) |
| بيانات النشر: | Nature Publishing Group, 2024. |
| سنة النشر: | 2024 |
| المجموعة: | LCC:Applied optics. Photonics LCC:Optics. Light |
| مصطلحات موضوعية: | Applied optics. Photonics, TA1501-1820, Optics. Light, QC350-467 |
| الوصف: | Abstract Terahertz modulators play a critical role in high-speed wireless communication, non-destructive imaging, and so on, which have attracted a large amount of research interest. Nevertheless, all-optical terahertz modulation, an ultrafast dynamical control approach, remains to be limited in terms of encoding and multifunction. Here we experimentally demonstrated an optical-programmed terahertz switching realized by combining optical metasurfaces with the terahertz metasurface, resulting in 2-bit dual-channel terahertz encoding. The terahertz metasurface, made up of semiconductor islands and artificial microstructures, enables effective all-optical programming by providing multiple frequency channels with ultrafast modulation at the nanosecond level. Meanwhile, optical metasurfaces covered in terahertz metasurface alter the spatial light field distribution to obtain color code. According to the time-domain coupled mode theory analysis, the energy dissipation modes in terahertz metasurface can be independently controlled by color excitation, which explains the principle of 2-bit encoding well. This work establishes a platform for all-optical programmed terahertz metadevices and may further advance the application of composite metasurface in terahertz manipulation. |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English |
| تدمد: | 2047-7538 |
| Relation: | https://doaj.org/toc/2047-7538 |
| DOI: | 10.1038/s41377-024-01495-1 |
| URL الوصول: | https://doaj.org/article/c6cb3a756bb54e178be00c1533957c0f |
| رقم الأكسشن: | edsdoj.6cb3a756bb54e178be00c1533957c0f |
| قاعدة البيانات: | Directory of Open Access Journals |
Find this article in full text from Springer Verlag. 
Full Text Finder | تدمد: | 20477538 |
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| DOI: | 10.1038/s41377-024-01495-1 |