| 数字离轴全息实验系统及其零级像分析 |
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| 引用本文： | 吕且妮 葛宝臻 张以谟. 数字离轴全息实验系统及其零级像分析[J]. 天津大学学报(自然科学与工程技术版), 2005, 38(8): 701-705 |
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| 作者姓名： | 吕且妮 葛宝臻 张以谟 |
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| 作者单位： | 天津大学精密仪器与光电子工程学院,光电信息技术科学教育部重点实验室,天津300072 |
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| 基金项目： | 国家自然科学基金资助项目（60077028）;高温高密度等离子体物理国防科技重点实验室基金资助项目（51480030203ZW0803）. |
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| 摘 要： | 针对数字全息术中记录介质分辨率制约物参光的最大夹角给实验系统搭建带来的问题，提出一种数字离轴全息记录系统．该系统是将低频全息衍射光栅作为分光元件引入数字全息系统，利用光栅衍射的0级和＋1／-1级形成离轴全息记录光路，同时对再现像中零级进行了理论分析，并进行实验研究实验结果证明了该系统的可行性，并且具有光路系统简单、操作容易等特点．
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| 关 键 词： | 离轴全息 数字全息 数字再现 全息光栅 零级像 |
| 文章编号： | 0493-2037（2005）08-0700-05 |
| 收稿时间： | 2004-04-02 |
| 修稿时间： | 2004-04-02 |
Experimental System of Digital Off-Axis Holography and Analysis of Zero-Order Image |
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| Lv JuNi;Ge BaoZhe;Zhang YiMo. Experimental System of Digital Off-Axis Holography and Analysis of Zero-Order Image[J]. Journal of Tianjin University(Science and Technology), 2005, 38(8): 701-705 |
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| Authors: | Lv JuNi Ge BaoZhe Zhang YiMo |
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| Abstract: | In digital holography, the limited spatial resolution of the charge coupled device(CCD) imposes a limit on the angle between the object beam and the reference beam, which brings about the difficulties in setting up the experimental system.For this reason, a simple hologram recording system of digital off-axis holography was presented.Holographic diffraction grating of low spatial frequency was introduced to digital holography and employed as a beam splitter, and an off-axis holography system was formed using interference of the +1/-1 order diffraction wave and the zero-order wave, which were generated by grating diffraction.The zero-order diffraction in the reconstructed image of off-axis digital holography was analyzed theoretically, and validated by experiments.The experimental results show that the system presented is feasible, simple in optical structure and easy in operation. |
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| Keywords: | off-axis holography digital holography numerical reconstruction holographic grating zero-order image |
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