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Abstract

In this work, the propagation properties of partially coherent power-exponent-phase vortex beam are studied. Firstly, the propagation model of partially coherent power-exponent-phase vortex beam is established. Then, the propagation properties of partially coherent power-exponent-phase vortex beams in free space and ABCD optical system are simulated. The results show that when power-exponent-phase vortex beams propagate in free space, the topological charge, power order and coherence length have a great influence on the distribution of light intensity, and the area of light spot gradually increases with the increase of propagation distance. When the beam propagates in a focusing system, the changes of topological charge and power order will affect the light intensity distribution, while the coherence length has little effect on the overall intensity distribution of the beam, but only the quality of the spot. The research results of this work reveal the propagation properties of partially coherent power-exponent-phase vortex beam, which will lay a theoretical foundation for its applications in optical capture and other fields, and has important significance in promoting the theory and applications of new light field regulation.

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Authors and contacts

Corresponding author:Hu You-You,yyhu@just.edu.cn

Funds:Project supported by the Natural Science Foundation of Jiangsu Province, China (Grant No. BK20190953) and the Key RD Program of Zhenjiang City — Industrial Foresight and Common Key Technology (Grant No. GY2020003).

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Vol. 71, Issue 1 - 2022-01-05

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