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논문 기본 정보

자료유형
학술저널
저자정보
Yangliang Li (National University of Defense Technology) Qing Ye (National University of Defense Technology) Lei Wang (National University of Defense Technology) Hao Zhang (National University of Defense Technology) Yunlong Wu (National University of Defense Technology) Xian’an Dou (National University of Defense Technology) Xiaoquan Sun (National University of Defense Technology)
저널정보
한국광학회 Current Optics and Photonics Current Optics and Photonics Vol.7 No.1
발행연도
2023.2
수록면
1 - 14 (14page)

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초록· 키워드

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Wavefront-coding imaging can achieve high-quality imaging along with a wide range of defocus. In this paper, the anti-laser detection and damage performance of wavefront-coding imaging systems using different asymmetric phase masks are studied, through modeling and simulation. Based on Fresnel-Kirchhoff diffraction theory, the laser-propagation model of the wavefront-coding imaging system is established. The model uses defocus distance rather than wave aberration to characterize the degree of defocus of an imaging system. Then, based on a given defocus range, an optimization method based on Fisher information is used to determine the optimal phase-mask parameters. Finally, the anti-laser detection and damage performance of asymmetric phase masks at different defocus distances and propagation distances are simulated and analyzed. When studying the influence of defocus distance, compared to conventional imaging, the maximum single-pixel receiving power and echo-detection receiving power of asymmetric phase masks are reduced by about one and two orders of magnitude respectively. When exploring the influence of propagation distance, the maximum single-pixel receiving power of asymmetric phase masks decreases by about one order of magnitude and remains stable, and the echodetection receiving power gradually decreases with increasing propagation distance, until it approaches zero.

목차

I. INTRODUCTION
II. THEORETICAL MODELING
III. EVALUATION INDEX AND SIMULATION PARAMETERS
IV. NUMERICAL SIMULATION OF DEFOCUS DISTANCE
V. NUMERICAL SIMULATION ON PROPAGATION DISTANCE
VI. CONCLUSIONS
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