| 4f光学系统中滤波函数角位移补偿的研究 |
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| 引用本文： | 李立,田逢春,刘赛,邱宇.4f光学系统中滤波函数角位移补偿的研究[J].光学技术,2009,35(4). |
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| 作者姓名： | 李立 田逢春 刘赛 邱宇 |
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| 作者单位： | 重庆大学,通信工程学院,重庆,400044 |
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| 基金项目： | 中国博士后科学基金资助项目 |
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| 摘 要： | 实验中4f光学系统的输入函数载体与滤波函数载体往往存在着一定的角位移,而这个角位移的存在影响了4f光学系统的精确滤波。将空间光调制器(SLM)作为4f光学系统的输入和滤波函数的载体,利用光栅衍射理论和傅里叶变换理论,提出了一种测量该角位移的方法。滤波函数旋转角位移值的大小可以补偿输入和滤波函数载体间存在的角位移。滤波实验证明了方法的有效性和必要性。
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| 关 键 词： | 信息光学 4f光学系统 空间光调制器 角位移 |
Study on the angular displacement compensation of filter function in the 4f optical system |
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| LI Li,TIAN Feng-chun,LIU Sai,QIU Yu.Study on the angular displacement compensation of filter function in the 4f optical system[J].Optical Technique,2009,35(4). |
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| Authors: | LI Li TIAN Feng-chun LIU Sai QIU Yu |
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| Institution: | LI Li,TIAN Feng-chun,LIU Sai,QIU Yu(College of Communication Engineering,Chongqing University,Chongqing 400044,China) |
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| Abstract: | Usually there is an angular displacement between the input function carrier and the filter function carrier in the 4f optical system during experiments,and its existence can influence the accurate filtering of the 4f optical system.The spatial light modulator(SLM) is used as the carriers of the input function and filter function in the 4f optical system,while a method of measuring the angular displacement is proposed by using the grating diffraction theory and the Fourier transform theory.In order to compen... |
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| Keywords: | information optics 4f optical system SLM angular displacement |
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