Ms. Shijie Huang Profile

Shijie Huang

at Nanjing Univ of Science and Technology

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Proceedings Article | 29 March 2023 Open Access

Generation of optical chains by phase-modulated radially polarized beams based on polarization-insensitive metalenses

Shijie Huang, Chen Xu, Junhao Chen, Junxin Chen, Zhe Shen

Proceedings Volume 12601, 126010E (2023) https://doi.org/10.1117/12.2667159

KEYWORDS: Optical components, Modulation, Metalenses, Phase distribution, Diffraction

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Optical chains have received widespread attention due to their unique characteristics of high intensity and multiple potential wells. Many methods have been used to generate optical chains, such as using diffractive optical elements or 4Pi systems to modulate vector beams. But these methods require additional phase elements or more complex optical systems. In this work, a single-layer polarization-insensitive metalens with phase distribution of the binary optical element was used to focus the radially polarized beam to generate optical chains. The Richards-Wolf vector diffraction theory was employed to calculate the focal field distribution of the radially polarized beam. Optical chains generated by both the simulated and theoretical calculation are composed of alternating solid points and bubbles which indicates that the theoretical results are in agreement with the simulation results. The introduction of metalens reduces the volume of the optical system, which is conducive to the miniaturization and integration of the optical system. This work may contribute to particle trapping and manipulation, optical micro-nano processing, etc.

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