تقرير
Nonlinear self-collimated sound beams in sonic crystals
| العنوان: | Nonlinear self-collimated sound beams in sonic crystals |
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| المؤلفون: | Hamham, El Mokhtar, Jiménez, Noé, Picó, Rubén, Sánchez-Morcillo, Víctor, García-Raffi, Lluís M., Staliunas, Kestutis |
| سنة النشر: | 2015 |
| المجموعة: | Condensed Matter |
| مصطلحات موضوعية: | Condensed Matter - Materials Science, Condensed Matter - Mesoscale and Nanoscale Physics |
| الوصف: | We report the propagation of high-intensity sound beams in a sonic crystal, under self-collimation or reduced-divergence conditions. The medium is a fluid with elastic quadratic nonlinearity, where the dominating nonlinear effect is harmonic generation. The conditions for the efficient generation of narrow, non-diverging beam of second harmonic are discussed. Numerical simulations are in agreement with the analytical predictions made, based on the linear dispersion characteristics in modulated media and the nonlinear interaction in a quadratic medium under phase matching conditions. Comment: Sent to PRB |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1103/PhysRevB.92.054302 |
| URL الوصول: | http://arxiv.org/abs/1505.05044 |
| رقم الأكسشن: | edsarx.1505.05044 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1103/PhysRevB.92.054302 |
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