论文标题

多才多艺的非分裂完美涡流梁

Versatile Non-diffracting Perfect Vortex Beams

论文作者

Yan, Wenxiang, Gao, Yuan, Yuan, Zheng, Weng, Zhe, Ren, Zhi-Cheng, Wang, Xi-Lin, Ding, Jianping, Wang, Hui-Tian

论文摘要

The rapid scale broadening and divergence increasing of vortex beams (VBs) with orbital angular momentum (OAM), e.g., Laguerre-Gaussian beams, severely impede the wide applications of VBs ranging from optical manipulation to high-dimensional quantum information communications, which call for VBs to have the same transverse scale and divergence for distinct OAM or even the small vortex ring for large OAM.另一方面,非裂开的光束能够克服衍射而无需发散,这是令人回味的,并且在包括原子光学和医学成像在内的许多应用中确实具有吸引力。在这里,我们在理论上提出了建议,并在实验上展示了一种全新的VB类型的VB,同时具有无散性的无散性不转变和自我修复特性,称为非划分的完美涡流束(NDPVB)。我们根据傅立叶空间分析来制定一种多功能工具包,以随意自定义NDPVB,以便通过具有有趣的自定义自定义行为的自定义行为,自动加速,自我相似,自我旋转和自我旋转。这超出了将横向平面定制到结构光束中较高维度的繁殖特性。对内部流动的更深入的了解,并确认了NDPVB的多维定制是通过诱导相应的多维内部流动的主导的,从而促进了我们对传播性能的设计方案如何操纵内部流的理解,从而揭示了结构形成的性质和结构光束的行为转换的性质。

The rapid scale broadening and divergence increasing of vortex beams (VBs) with orbital angular momentum (OAM), e.g., Laguerre-Gaussian beams, severely impede the wide applications of VBs ranging from optical manipulation to high-dimensional quantum information communications, which call for VBs to have the same transverse scale and divergence for distinct OAM or even the small vortex ring for large OAM. Non-diffracting beams, on the other hand, that are capable of overcoming diffraction without divergence, are very evocative and indeed appealing in numerous applications including atom optics and medical imaging. Here, we propose theoretically and demonstrate experimentally a brand new type of VB having OAM-independent radii meanwhile holding propagation-invariant without divergence as well as self-healing properties, named non-diffracting perfect vortex beam (NDPVB). We work out a versatile toolkit based on Fourier-space analysis to multidimensionally customize NDPVBs at will so that it is of propagating intensity and phase controllability with intriguing customizable behaviors of self-accelerating, self-similar, and self-rotating. This goes beyond tailoring the transverse plane to the higher-dimensional propagating characteristics in structured light beams. A deeper insight into the internal flow revealed and confirmed that the multidimensional customization of NDPVBs is dominated by inducing corresponding multidimensional internal flow, facilitating our understanding of how our design scheme of propagating properties manipulates the internal flows, unveiling the nature of structure formation and behavior transformation of structured light beams.

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