Formation and focusing characteristics of Pearcey beam

Hanqing, 胡汉青 Hu; Fengtie, 吴逢铁 Wu; Run, 胡润 Hu; Yanfei, 杨艳飞 Yang; Qingzhi, 朱清智 Zhu

doi:10.3788/irla201847.0618003

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2023

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“…The shape or intensity of the light field of may change, but the PB can always be represented by the Pearcey function. At the same time, the PB also has the special properties of self-focusing [7][8][9], self-healing [8,10], and transverse accelerating during propagation. The self-healing property makes the beam difficult scatter after the block of a biological tissue, and the self-focusing phenomenon is demonstrated in the propagation path.…”

Section: Introductionmentioning

confidence: 99%

Modified Pearcey beam with enhanced focusing effects

Peng¹,

Xia²,

Tao³

2023

J. Opt.

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In this paper, the focusing effects of the Pearcey beam (PB) are improved based on catastrophe optics, and the Pearcey integral is modified based on the butterfly catastrophe light field. A modified Pearcey beam (MPB) with a long focal depth is proposed, and the flexible adjustment of the focus position of the MPB is realized through theoretical analysis, simulation and experiment. The long focal depth of the beam is achieved under the premise of keeping the stable focus of the beam. Compared with the PB, the MPB has longer focal depth and more flexible focus position. With improved focusing effects, the applications of the MPBs in optical imaging and optical manipulation can be expanded.

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