Propagable Optical Vortices with Natural Noninteger Orbital Angular Momentum in Free Space

Autor: Xiaoyu Weng, Yu Miao, Guanxue Wang, Qiufang Zhan, Xiangmei Dong, Junle Qu, Xiumin Gao, Songlin Zhuang
Jazyk: angličtina
Rok vydání: 2023
Předmět:
Zdroj: Advanced Photonics Research, Vol 4, Iss 1, Pp n/a-n/a (2023)
Druh dokumentu: article
ISSN: 2699-9293
DOI: 10.1002/adpr.202200094
Popis: Light beams with optical vortices can propagate in free space only with integer orbital angular momentum. Herein, this scientific consensus theoretically and experimentally is upheaved by proposing light beams carrying natural noninteger orbital angular momentum. These peculiar vortex beams are unique solutions to the Helmholtz equation, which possesses optical vortices with topological charges of l + 0.5, where l is an integer. During propagation in free space, their amplitudes and vortex phases with noninteger topological charges can be maintained stably. The findings of this study provide an alternative state of optical vortices in physics, which can serve as basis for innovations in optics and related scientific fields.
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