| 基于角谱衍射的离轴数字全息数值重建理论分析 |
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| 引用本文： | 郑楚君,韩鹏,李榕,常鸿森. 基于角谱衍射的离轴数字全息数值重建理论分析[J]. 激光杂志, 2006, 27(1): 44-45 |
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| 作者姓名： | 郑楚君 韩鹏 李榕 常鸿森 |
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| 作者单位： | 华南师范大学物理与电信工程学院,广州,510631;华南师范大学物理与电信工程学院,广州,510631;华南师范大学物理与电信工程学院,广州,510631;华南师范大学物理与电信工程学院,广州,510631 |
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| 摘 要： | 分析了离轴数字全息的频谱分布，基于角谱衍射的方法进行离轴数字全息的重建，并通过频域滤波去除零级像、共轭像。理论分析表明该方法可用于离轴数字全息的准确重建。即使在菲涅耳近似不满足的情况下，该方法依然有效．可进一步用于数字全息的多平面和多角度的重建。
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| 关 键 词： | 离轴数字全息 角谱衍射 零级像 共轭像 频域滤波 |
| 文章编号： | 0253-2743（2006）01-0044-02 |
| 收稿时间： | 2004-04-05 |
| 修稿时间： | 2004-04-05 |
Theoretical analysis for numerical reconstruction of off- axis digital hologram based on angular spectrum diffraction |
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| ZHENG Chu-jun,HAN Peng,LI Rong,CHANG Hong-sen. Theoretical analysis for numerical reconstruction of off- axis digital hologram based on angular spectrum diffraction[J]. Laser Journal, 2006, 27(1): 44-45 |
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| Authors: | ZHENG Chu-jun HAN Peng LI Rong CHANG Hong-sen |
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| Affiliation: | School of Physics and Telecommunication, Engineering South China Normal University, Guangzhou, 510631, China |
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| Abstract: | Numerical reconstruction of off-axis digital hologram based on angular spectrum diffraction and elimination of zero-order and conjugate images using spatial frequency filter owing to its Spatial spectrum distribution is separate is presented.Theoretical analysis show that the methods suitable for exact reconstruction of off-axis digital holograms.The method is valid when Fresnel approximation isn't satisfied,can be further applied for reconstruction of digital holograms with variable viewing angle or variable planes. |
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| Keywords: | off-axis digital holography angular spectrum diffraction zero-order image conjugate image frequency filter. |
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