Current Optics and Photonics

  • 제8권4호
  • /
  • Pages.355-365
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  • 2024
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  • 2508-7266(pISSN)
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  • 2508-7274(eISSN)
한국광학회 (Optical Society of Korea)
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Performance Analysis of Spiral Axicon Wavefront Coding Imaging System for Laser Protection

  • Haoqi Luo (State Key Laboratory of Pulsed Power Laser Technology, National University of Defense Technology) ;
  • Yangliang Li (State Key Laboratory of Pulsed Power Laser Technology, National University of Defense Technology) ;
  • Junyu Zhang (State Key Laboratory of Pulsed Power Laser Technology, National University of Defense Technology) ;
  • Hao Zhang (State Key Laboratory of Pulsed Power Laser Technology, National University of Defense Technology) ;
  • Yunlong Wu (State Key Laboratory of Pulsed Power Laser Technology, National University of Defense Technology) ;
  • Qing Ye (State Key Laboratory of Pulsed Power Laser Technology, National University of Defense Technology)
  • 투고 : 2024.05.08
  • 심사 : 2024.07.02
  • 발행 : 2024.08.25
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초록

Wavefront coding (WFC) imaging systems can redistribute the energy of an interference laser spot on an image plane sensor by wavefront phase modulation and reduce the peak intensity, realizing laser protection while maintaining imaging functionality by leveraging algorithmic post-processing. In this paper, a spiral axicon WFC imaging system is proposed, and the performance for laser protection is investigated by constructing a laser transmission model. An Airy disk on an image plane sensor is refactored into a symmetrical hollow ring by a spiral axicon phase mask, and the maximum intensity can be reduced to lower than 1% and single-pixel power to 1.2%. The spiral axicon phase mask exhibits strong robustness to the position of the interference laser source and can effectively reduce the risk of sensor damage for an almost arbitrary lase propagation distance. Moreover, we revealed that there is a sensor hazard distance for both conventional and WFC imaging systems where the maximum single-pixel power reaches a peak value under irradiation of a power-fixed laser source. Our findings can offer guidance for the anti-laser reinforcement design of photoelectric imaging systems, thereby enhancing the adaptability of imaging systems in a complex laser environment. The laser blinding-resistant imaging system has potential applications in security monitoring, autonomous driving, and intense-laser-pulse experiments.

키워드

과제정보

Postdoctoral Fellowship Program of China Postdoctoral Science Foundation (GZC20233531); Technology Domain Fund of Basic Strengthening Plan (2021-JCJQ-JJ-0284 and 2022-JCJQ-JJ-0237); Research Project of National University of Defense Technology (ZK2041 and ZK23-49); Advanced Laser Technology Laboratory Foundation of Anhui Province (AHL2021QN03 and AHL2022ZR03); State Key Laboratory Foundation of Pulsed Power Laser Technology (SKL2022ZR09); Young Doctor Foundation of Electronic Engineering College of the National University of Defense Technology (KY21C218).

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