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Spatial (2+l)D higher-order vector solitons in a photorefractive medium

机译:空间(2 + L)D在光折型培养基中的高阶载体孤子

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We investigate the generation of higher-order optical vector solitons in two transverse dimensions in anisotropic nonlinear media consisting of an incoherent superposition of a Gaussian beam and a higher-order laser mode with a complex internal modal structure. We demonstrate both, numerically and experimentally various examples of these stable self-trapped light structures and show that vortex modes carrying topological charge always decay into multiple-humped structures which remain self-trapped during propagation. Furthermore we combine two dipole mode beams in the absence of a fundamental Gaussian component and demonstrate their mutual attraction that displays an unstable propagation behaviour and leads to a splitting of one constituent beam.
机译:我们在各向异性非线性介质中调查了两个横向尺寸的高阶光学载体孤子的产生,该横向尺寸包括具有复杂的内部模态结构的高斯梁的不连贯叠加和高阶激光模式。我们在数值和实验上示出了这些稳定的自捕获光结构的各种示例,并且表明携带拓扑电荷的涡旋模式总是腐蚀到传播期间保持自捕获的多颗粒结构。此外,我们在没有基本高斯组件的情况下结合两个偶极模式梁,并展示它们的相互吸引力,该吸引力显示不稳定的传播行为,并导致一个组成光束的分裂。

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