分歧(语言学)
旋涡
涡流
光通信
物理
电信
计算机科学
光学
气象学
哲学
语言学
作者
Wenxiang Yan,Zhaozhong Chen,X.-C. Long,Yuan Gao,Zheng Yuan,Zhi‐Cheng Ren,Xi‐Lin Wang,Jianping Ding,Hui‐Tian Wang
出处
期刊:Advanced photonics
[SPIE - International Society for Optical Engineering]
日期:2024-05-17
卷期号:6 (03)
被引量:5
标识
DOI:10.1117/1.ap.6.3.036002
摘要
Recognized in the 1990s, vortex beams' ability to carry orbital angular momentum (OAM) has significantly contributed to applications in optical manipulation and high-dimensional classical and quantum information communication. However, inherent diffraction in free space results in the inevitable expansion of beam size and divergence contingent upon the OAM, limiting vortex beams' applicability in areas such as spatial mode multiplexing communication, fiber-optic data transmission, and particle manipulation. These domains necessitate vortex beams with OAM-independent propagation characteristics. We introduce iso-propagation vortices (IPVs), vortex beams characterized by OAM-independent propagation behavior, achieved through precise radial index configuration of Laguerre–Gaussian beams. IPVs display notable transmission dynamics, including a reduced quality factor, resilience post-damage, and decreased and uniform modal scattering under atmospheric turbulence. Their distinctive attributes render IPVs valuable for potential applications in imaging, microscopy, optical communication, metrology, quantum information processing, and light–matter interactions. Notably, within optical communication, the case study suggests that the IPV basis, due to its OAM-independent propagation behavior, provides access to a more extensive spectrum of data channels compared with conventional spatial multiplexing techniques, consequently augmenting information capacity.
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