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Acta Optica Sinica, Volume. 45, Issue 12, 1226001(2025)

Radar Filtering Detection Utilizing Coaxial Vortex Modulations via Spiral Multi-Pinhole Array

Li Ma1,2, Ying Wang1, Ying Zhang1, Min Li1, Xiangyu Wang1, Pengcheng Liu1, and Yaru Gao2,3,4、*
Author Affiliations
  • 1Department of Physics, Changzhi University, Changzhi 046011, Shanxi , China
  • 2School of Physics and Electronics, Shandong Normal University, Jinan 250014, Shandong , China
  • 3Shandong Provincial Engineering and Technical Center of Light Manipulations, Shandong Normal University, Jinan 250014, Shandong , China
  • 4Shandong Provincial Key Laboratory of Optics and Photonic Devices, Shandong Normal University, Jinan 250014, Shandong , China
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    Principle of vortex modulation. (a) Schematic of vortex beam generation modulated by spiral multi-pinhole array; (b) front view of spiral multi-pinhole array

    Fig. 1. Principle of vortex modulation. (a) Schematic of vortex beam generation modulated by spiral multi-pinhole array; (b) front view of spiral multi-pinhole array

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    Vortex radar detection system model. (a) Schematic of radar system based on coaxial modulation of vortex beams; (b) vortex detection beam; (c) superimposed beam

    Fig. 2. Vortex radar detection system model. (a) Schematic of radar system based on coaxial modulation of vortex beams; (b) vortex detection beam; (c) superimposed beam

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    Optical intensity and phase distributions at each stage of coaxial vortex modulation. (a1)(a2) Vortex detection beam (l=4); (b1)(b2) vortex signal beam (l=0); (c1)(c2) vortex beam of natural background noise (l=4)

    Fig. 3. Optical intensity and phase distributions at each stage of coaxial vortex modulation. (a1)(a2) Vortex detection beam (l=4); (b1)(b2) vortex signal beam (l=0); (c1)(c2) vortex beam of natural background noise (l=4)

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    Superimposed optical fields with different topological charges and their normalized transverse intensity distributions. (a) Superimposed vortex beams with different topological charges; transverse intensity distributions of superimposed beams corresponding to (b) l=1‒3, (c) l=4, and (d) l=5‒7

    Fig. 4. Superimposed optical fields with different topological charges and their normalized transverse intensity distributions. (a) Superimposed vortex beams with different topological charges; transverse intensity distributions of superimposed beams corresponding to (b) l=1‒3, (c) l=4, and (d) l=5‒7

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    Li Ma, Ying Wang, Ying Zhang, Min Li, Xiangyu Wang, Pengcheng Liu, Yaru Gao. Radar Filtering Detection Utilizing Coaxial Vortex Modulations via Spiral Multi-Pinhole Array[J]. Acta Optica Sinica, 2025, 45(12): 1226001

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    Paper Information

    Category: Physical Optics

    Received: Feb. 10, 2025

    Accepted: Apr. 24, 2025

    Published Online: Jun. 23, 2025

    The Author Email: Yaru Gao (gaoyaru@sdnu.edu.cn)

    DOI:10.3788/AOS250581

    CSTR:32393.14.AOS250581

    Topics

    laser devices and laser physics
    Lasers and Laser Optics
    Laser physics
    laser manufacturing
    Instrumentation, Measurement and Metrology