Application of vortex beam interference in displacement measurement

Hongwei Gao; Xiaoning Hu; Zhongming Yang; Zhaojun Liu

doi:10.1117/12.3007637

24 November 2023 Application of vortex beam interference in displacement measurement

Hongwei Gao, Xiaoning Hu, Zhongming Yang, Zhaojun Liu

Proceedings Volume 12935, Fourteenth International Conference on Information Optics and Photonics (CIOP 2023); 129352G (2023) https://doi.org/10.1117/12.3007637
Event: Fourteenth International Conference on Information Optics and Photonics (CIOP 2023), 2023, Xi’an, China

Abstract

Aiming at the characteristics of vortex beam and plane wave interference, as well as vortex beam self-conjugate interference, this report presents methods for microscopic displacement measurements using petal-like interferograms of vortex beam interference, which has been validated by theoretical analysis, simulations and experiments. On the basis of verifying the linear relationship between interference fringe Angle and micro-displacement through experiments, further, the information processing of petal-like interferogram is explored, and the corresponding fringe extraction method and error correction method are proposed, which provides a new detection scheme and technical approach for eddy light interference detection to be applied to nano level micro-displacement measurement.

Citation Download Citation

Hongwei Gao, Xiaoning Hu, Zhongming Yang, and Zhaojun Liu "Application of vortex beam interference in displacement measurement", Proc. SPIE 12935, Fourteenth International Conference on Information Optics and Photonics (CIOP 2023), 129352G (24 November 2023); https://doi.org/10.1117/12.3007637

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