Rotating vortex clusters nested in Gaussian envelope in nonlocal nonlinear media

Rotating vortex clusters nested in Gaussian envelope in nonlocal nonlinear media
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非局部非线性介质中嵌套在高斯包络中的旋转涡旋簇

DOI:
10.1016/j.optcom.2019.05.036
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发表时间:
2019-10
影响因子:
2.4
通讯作者:
Liang Guo
Liang Guo
中科院分区:
物理与天体物理3区
文献类型:
--
作者:
Chen Yage;Liang Guo

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对非局部非线性介质中角加速呼吸器的旋转特性进行了解析讨论。呼吸器由高斯包络和任意数量拓扑电荷的嵌套涡组成。基于二维分数傅里叶变换方法得到的解析解,预测了呼吸器具有有趣的旋转。当涡旋同时绕着自己的轴旋转时,它会绕着高斯包络的核心旋转。两种旋转速度都与光功率密切相关。光功率引起的加速度增强也被发现,并且可以用刚体旋转的类比来解释。
The rotational properties of angularly accelerating breathers are analytically discussed in nonlocal nonlinear media. The breather comprises of a Gaussian envelope and the nested vortices with any number of topological charges. Based on the analytical solution obtained by an approach of two-dimensional fractional Fourier transform, the breather is predicted to exhibit an interesting rotation. The vortex revolves around the core of the Gaussian envelope when spinning simultaneously around its own axis. And both rotating velocities closely depend on the optical power. An optical power induced acceleration enhancement is also found, and can be explained in an analogy with the rotation of rigid bodies.
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