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16 October 2023 High-charge perfect vortex beam generation
Ke Hai Luo, Rui Ma, Jun Liu, Dian Yuan Fan
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Proceedings Volume 12792, Eighteenth National Conference on Laser Technology and Optoelectronics; 127921Q (2023) https://doi.org/10.1117/12.2691523
Event: Eighteenth National Conference on Laser Technology and Optoelectronics, 2023, Shanghai, China
Abstract
Optical vortices have captured considerable attention in the past several decades. The generation of a flexibly modulated vortex beam with super-high topological charge is always attractive for practical applications. Here, we combine random fiber laser (RFL) with digital micromirror device (DMD) based superpixel wavefront shaping, realizing the perfect vortex beam (PVB) generation with topological charge as high as 130 order. The resulting ultra-high topological charge PVBs inherit the advantages of low noise and none longitudinal mode oscillation from RFL, high fidelity and flexibility from superpixel wavefront shaping. It is anticipated that the proposed high-charge PVB can serve as a seed beam for the development of advanced structured light, which has great potential in the fields of optical manipulation, optical communication, and biphotonic.
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Ke Hai Luo, Rui Ma, Jun Liu, and Dian Yuan Fan "High-charge perfect vortex beam generation", Proc. SPIE 12792, Eighteenth National Conference on Laser Technology and Optoelectronics, 127921Q (16 October 2023); https://doi.org/10.1117/12.2691523
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KEYWORDS
Digital micromirror devices
Wavefronts
Modulation
Binary data
Charge-coupled devices
Fiber lasers
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