| 用双光路方法精确测量光栅衍射效率 |
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| 引用本文： | 韦晓茹,居戬之,朱亚一.用双光路方法精确测量光栅衍射效率[J].苏州大学学报(医学版),2006,22(4):43-46. |
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| 作者姓名： | 韦晓茹 居戬之 朱亚一 |
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| 作者单位： | 苏州大学信息光学工程研究所,江苏苏州215006 |
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| 摘 要： | 光栅衍射效率是光栅的重要参数．设计了用双光路并利用计算机作数据采集和处理来测量光栅衍射效率的方法．实验中使用的微电流放大器的分辨能力为10pA．自行研制了数据采集卡以及编写了基于计算机的增强型并行接口（enhanced parallel port，EPP）协议的软件，使得测量精确度达到2．1％．能够较好地满足光栅衍射效率的测量．
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| 关 键 词： | 光栅 双光路 衍射效率 |
| 文章编号： | 1000-2073(2006)04-0043-04 |
| 收稿时间： | 08 10 2006 12:00AM |
| 修稿时间： | 2006年8月10日 |
Accurately measuring diffraction efficiency of gratings with double beams |
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| WEI Xiao-ru,JU Jian-zhi,ZHU Ya-yi.Accurately measuring diffraction efficiency of gratings with double beams[J].Journal of Suzhou University(Natural Science),2006,22(4):43-46. |
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| Authors: | WEI Xiao-ru JU Jian-zhi ZHU Ya-yi |
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| Institution: | The Institute of Information Optical Engineering, Suzhou Univ,, Suzhou 215006, China |
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| Abstract: | Diffraction efficiency is an important characteristic of gratings.The method with double beams used for measuring diffraction efficiency accurately is designed.A micro current amplifier with 10pA resolution is used in the measuring system.The data acquisition interface board and the software according to EPP(the enhanced parallel port) protocol used in our experiment are designed by ourselves.The measurement precision is 2.1%. |
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| Keywords: | EPP MAX197 |
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