دورية أكاديمية
Linear and nonlinear optical properties of dewetted SiGe islands
| العنوان: | Linear and nonlinear optical properties of dewetted SiGe islands |
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| المؤلفون: | Luca Fagiani, Nicoletta Granchi, Attilio Zilli, Chiara Barri, Francesco Rusconi, Michele Montanari, Erfan Mafakheri, Michele Celebrano, Mohammed Bouabdellaoui, Marco Abbarchi, Francesca Intonti, Anjam Khursheed, Paolo Biagioni, Marco Finazzi, Maria Antonietta Vincenti, Monica Bollani |
| المصدر: | Optical Materials: X, Vol 13, Iss , Pp 100116- (2022) |
| بيانات النشر: | Elsevier, 2022. |
| سنة النشر: | 2022 |
| المجموعة: | LCC:Applied optics. Photonics LCC:Optics. Light |
| مصطلحات موضوعية: | Solid state dewetting, SiGe nanostructures, Mie resonator, Third- harmonic generation, Applied optics. Photonics, TA1501-1820, Optics. Light, QC350-467 |
| الوصف: | We propose to exploit the natural mechanical instability of thin solid films to form regular patterns of monocrystalline atomically smooth silicon and germanium nanostructures that cannot be realized with conventional methods. The solid-state dewetting dynamics is guided by pre-patterning the sample by a combination of electron-beam lithography and reactive-ion etching, obtaining precise control over number, size, shape, and relative position of the final Si1-xGex structures. Here we describe our progress in the spectroscopic investigation of individual dewetted Si1-xGex nanoislands: in the linear regime, bright Mie-type localized resonances are detected in the visible spectral range, with a spectral position that can be tuned by modifying the size of the nanoparticles. In the non-linear regime, instead, sizable third-harmonic generation is observed at the level of single islands. We believe that these results will be pivotal to a novel approach in spectral filtering, sensing and structural color with all-dielectric photonic devices. |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English |
| تدمد: | 2590-1478 |
| Relation: | http://www.sciencedirect.com/science/article/pii/S2590147821000437; https://doaj.org/toc/2590-1478 |
| DOI: | 10.1016/j.omx.2021.100116 |
| URL الوصول: | https://doaj.org/article/e0fba9a316b54ba3aa32582c3fc909f4 |
| رقم الأكسشن: | edsdoj.0fba9a316b54ba3aa32582c3fc909f4 |
| قاعدة البيانات: | Directory of Open Access Journals |
Full Text Finder | تدمد: | 25901478 |
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| DOI: | 10.1016/j.omx.2021.100116 |