تقرير
Observation and control of nonlinear electromagnetic topological edge states
| العنوان: | Observation and control of nonlinear electromagnetic topological edge states |
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| المؤلفون: | Dobrykh, D. A., Yulin, A. V., Slobozhanyuk, A. P., Poddubny, A. N., Kivshar, Yu. S. |
| المصدر: | Phys. Rev. Lett. 121, 163901 (2018) |
| سنة النشر: | 2018 |
| المجموعة: | Condensed Matter Physics (Other) |
| مصطلحات موضوعية: | Physics - Optics, Condensed Matter - Mesoscale and Nanoscale Physics, Physics - Classical Physics |
| الوصف: | Topological photonics has recently emerged as a route to realize robust optical circuitry, and nonlinear effects are expected to enable tunability of topological states with the light intensity. Here we realize experimentally nonlinear self-induced spectral tuning of the electromagnetic topological edge states in an array of coupled nonlinear resonators in a pump-probe experiment. In a weakly nonlinear regime, we observe that resonators frequencies exhibit spectral shifts, that are concentrated mainly at the edge mode affecting only weakly the bulk modes. For a strong pumping, we describe several scenarios of the transformation of the edge states and their hybridization with bulk modes, and also predict a parametrically driven transition from topological to unstable regimes. Comment: 5 pages, 5 figures |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1103/PhysRevLett.121.163901 |
| URL الوصول: | http://arxiv.org/abs/1805.03760 |
| رقم الأكسشن: | edsarx.1805.03760 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1103/PhysRevLett.121.163901 |
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