| 改进型分形波带片的焦深特性研究 |
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| 引用本文： | 张芹芹,朱思伟,袁小聪.改进型分形波带片的焦深特性研究[J].光学学报,2011(8):257-261. |
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| 作者姓名： | 张芹芹 朱思伟 袁小聪 |
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| 作者单位： | 南开大学现代光学研究所光电信息技术教育部重点实验室;南开大学人民医院分子医学与纳米光学实验室; |
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| 基金项目： | 国家973计划(2010CB327702)资助课题 |
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| 摘 要： | 提出了一种具有增大焦深特性的改进型分形波带片(FZP).分析并推导了改进型分形波带片基于优化参数w的周期公式;计算了改进型分形波带片在菲涅耳近似下的衍射光场分布以及对应的横向光场分布特性因子,包括分辨率因子(G),施特雷尔比(S)以及旁瓣强度因子(M);同时分析了在不同的径向坐标r和r2下的改进型分形波带片的焦深特性,...
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| 关 键 词： | 衍射 分形波带片 周期分布 焦深 |
Focal Depth Properties of Modified Fractal Zone Plate |
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| Zhang Qinqin Zhu Siwei Yuan Xiaocong Key Laboratory of Optoelectronic Information Science , Technology,Ministry of Education of China.Focal Depth Properties of Modified Fractal Zone Plate[J].Acta Optica Sinica,2011(8):257-261. |
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| Authors: | Zhang Qinqin Zhu Siwei Yuan Xiaocong Key Laboratory of Optoelectronic Information Science Technology Ministry of Education of China |
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| Institution: | Zhang Qinqin1 Zhu Siwei2 Yuan Xiaocong1 1 Key Laboratory of Optoelectronic Information Science and Technology,Ministry of Education of China,Institute of Modern Optics,Nankai University,Tianjin300071,China2 Laboratory of Molecular Medicine and Nano Optics,the Affiliated Hospital,Tianjin300121,China |
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| Abstract: | A modified fractal zone plate(FZP) with the character of extending the focal depth is proposed.Through calculating,the period and the structure of modified FZP with the parameter w are obtained.Within the Fresnel approximation,the diffractive field distribution and the corresponding factors of the transverse field distribution such as superresolution factor G,Strehl ratio S and sidelobe strength M have been studied using the numerical method.The properties of modified FZP in different radial coordinates(r a... |
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| Keywords: | diffraction fractal zone plate distribution of period focal depth |
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