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논문 기본 정보

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학술저널
저자정보
Haoqi Luo (National University of Defense Technology) Yangliang Li (National University of Defense Technology) Junyu Zhang (National University of Defense Technology) Hao Zhang (National University of Defense Technology) Yunlong Wu (National University of Defense Technology) Qing Ye (National University of Defense Technology)
저널정보
한국광학회 Current Optics and Photonics Current Optics and Photonics Vol.8 No.4
발행연도
2024.8
수록면
355 - 365 (11page)

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초록· 키워드

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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.

목차

I. INTRODUCTION
II. LASER TRANSMISSION MODEL
III. LASER PROTECTION PERFORMANCE OF WFC SYSTEMS AT DIFFERENT PROPAGATION DISTANCES
IV. IMAGING SIMULATION OF WFC IMAGING SYSTEMS
V. CONCLUSION
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