| Autor: |
Yin Hong-cheng, Hou Zhao-Guo, Yan Hua, Li Liang-Sheng |
| Rok vydání: |
2013 |
| Předmět: |
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| Zdroj: |
Acta Physica Sinica. 62:030301 |
| ISSN: |
1000-3290 |
| DOI: |
10.7498/aps.62.030301 |
| Popis: |
We present the spatially self-bending solutions (the partial Bessel functions) of the Maxwell equations, where the self-bending wave can be produced through launching a group of plane waves that interfere with each other by modulating their initial phases and the emission directions. The self-bending electromagnetic waves accelerating in a circular trajectory preserve the beam shape within a certain propagation distance. Unlike Ariy wave packet, the bending angle of the new self-accelerating wave can be much larger than that of Ariy beam. The Poynting vector of the half Bessel beam shows that the main lobe maintains a propagation-invariant structure and can complete a turn close to 180°. In addition, one pair of half Bessel electromagnetic waves is forbidden to propagate inside a certain area where the designed beam generates the self-shielding region. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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