| 台阶光栅衍射效率的傅里叶分析 |
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| 引用本文： | 刘晓兵,阮玉.台阶光栅衍射效率的傅里叶分析[J].激光技术,1998,22(5):287-289. |
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| 作者姓名： | 刘晓兵 阮玉 |
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| 作者单位： | 1.华中理工大学光电子工程系, 武汉, 430074 |
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| 摘 要： | 用傅里叶方法对台阶光栅衍射效率进行了分析,得出任意台阶数,任意台阶高度的二元光栅任意级次的衍射效率公式.针对二台阶光栅分析了台阶高度,台阶宽度,不同波长对+1级衍射效率的影响,理论图像清晰,结果简单明了.
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| 关 键 词： | 二元光栅 衍射效率 傅里叶分析 |
| 收稿时间： | 1997-10-01 |
| 修稿时间： | 1997-12-22 |
Fourier analysis to diffraction efficiency of step gratings |
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| Liu Xiaobing,Ruan Yu.Fourier analysis to diffraction efficiency of step gratings[J].Laser Technology,1998,22(5):287-289. |
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| Authors: | Liu Xiaobing Ruan Yu |
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| Abstract: | Using Fourier transfer,we extend the transparent index function of step grating into Fourier series and derived the expression of diffraction efficiency.The expression shows that the diffraction efficiency is the function of width ratio ξ,height ratio γ and wavelength ratio σ.As a example,we give the calculation results of diffraction efficiency of 2-level step grating. |
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| Keywords: | binary gratings diffraction efficiency Fourier analysis |
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