| 运用严格耦合波理论计算平面电介质光栅的衍射效率 |
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| 引用本文： | 张思炯,王涌天,华宏. 运用严格耦合波理论计算平面电介质光栅的衍射效率[J]. 光学技术, 1998, 0(1) |
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| 作者姓名： | 张思炯 王涌天 华宏 |
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| 作者单位： | 北京理工大学光电工程系 |
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| 基金项目： | 国家自然科学基金，国家教委博士点基金，跨世纪优秀人才培养计划基金 |
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| 摘 要： | 本文阐述了严格耦合波理论的基本思想。针对横电波的情况，详细分析了运用严格耦合波理论实现光栅衍射效率计算的方法，并且进一步给出了编制计算衍射效率程序的步骤。通过一个具体计算实例表明：各衍射级分布的光能量之和等于入射光的能量，满足能量守恒定律，从而证实了计算结果的正确性。
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| 关 键 词： | 严格耦合波理论，光栅，衍射效率 |
Calculation of Diffraction Efficiency for a Planar Grating Using Rigorous Coupled Wave Theory |
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| Abstract: | : The basic concept and formulae of the rigorous coupled wave theory are given. The method of using the theory to compute the diffraction efficiency of a planar grating is described in detail, and the procedure of programming discussed. A numerical example shows that the computed results of energy distribution of all diffration orders satisfy the law of energy conservation, which demostrates the correctness of our calculation. |
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| Keywords: | : coupled wave theory grating diffraction efficiency |
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