Academic Journal
Giant ultrafast dichroism and birefringence with active nonlocal metasurfaces
| العنوان: | Giant ultrafast dichroism and birefringence with active nonlocal metasurfaces |
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| المؤلفون: | Giulia Crotti, Mert Akturk, Andrea Schirato, Vincent Vinel, Anton A. Trifonov, Ivan C. Buchvarov, Dragomir N. Neshev, Remo Proietti Zaccaria, Paolo Laporta, Aristide Lemaître, Giuseppe Leo, Giulio Cerullo, Margherita Maiuri, Giuseppe Della Valle |
| المصدر: | Light: Science & Applications, Vol 13, Iss 1, Pp 1-11 (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 Switching of light polarization on the sub-picosecond timescale is a crucial functionality for applications in a variety of contexts, including telecommunications, biology and chemistry. The ability to control polarization at ultrafast speed would pave the way for the development of unprecedented free-space optical links and of novel techniques for probing dynamical processes in complex systems, as chiral molecules. Such high switching speeds can only be reached with an all-optical paradigm, i.e., engineering active platforms capable of controlling light polarization via ultrashort laser pulses. Here we demonstrate giant modulation of dichroism and birefringence in an all-dielectric metasurface, achieved at low fluences of the optical control beam. This performance, which leverages the many degrees of freedom offered by all-dielectric active metasurfaces, is obtained by combining a high-quality factor nonlocal resonance with the giant third-order optical nonlinearity dictated by photogenerated hot carriers at the semiconductor band edge. |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English |
| تدمد: | 2047-7538 73558532 |
| Relation: | https://doaj.org/toc/2047-7538 |
| DOI: | 10.1038/s41377-024-01545-8 |
| URL الوصول: | https://doaj.org/article/9fa73558532a42be9067a8039a10bd4e |
| رقم الانضمام: | edsdoj.9fa73558532a42be9067a8039a10bd4e |
| قاعدة البيانات: | Directory of Open Access Journals |
Full Text Finder | تدمد: | 20477538 73558532 |
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| DOI: | 10.1038/s41377-024-01545-8 |