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Nonlinear dynamics of Airy-vortex 3D wave packets: emission of vortex light waves

机译:艾里涡旋3D波包的非线性动力学:涡旋光波的发射

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The dynamics of 3D Airy-vortex wave packets is studied under the action of strong self-focusing Kerr nonlinearity. Emissions of nonlinear 3D waves out of the main wave packets with the topological charges were demonstrated. Because of the conservation of the total angular momentum, charges of the emitted waves are equal to those carried by the parental light structure. The rapid collapse imposes a severe limitation on the propagation of multidimensional waves in Kerr media. However, the structure of the Airy beam carrier allows the coupling of light from the leading, most intense peak into neighboring peaks and consequently strongly postpones the collapse. The dependence of the critical input amplitude for the appearance of a fast collapse on the beam width is studied for wave packets with zero and nonzero topological charges. Wave packets carrying angular momentum are found to be much more resistant to the rapid collapse.
机译:在强烈的自聚焦Kerr非线性作用下研究了3D Airy涡流波包的动力学。演示了带有拓扑电荷的主波包中非线性3D波的发射。由于总角动量的守恒,所发射的波的电荷等于父母的光结构所携带的电荷。快速坍塌严重限制了多维波在Kerr介质中的传播。然而,艾里光束载体的结构允许将来自最强的前导峰的光耦合到相邻峰中,并因此强烈推迟崩溃。对于具有零和非零拓扑电荷的波包,研究了临界输入幅度对快速塌陷的出现与光束宽度的关系。发现带有角动量的波包对快速塌陷具有更大的抵抗力。

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