| 线偏光闪耀反射光栅衍射特性研究 |
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| 引用本文： | 李淑萍,朱京平,李斌,唐天同.线偏光闪耀反射光栅衍射特性研究[J].光子学报,2010,39(2):219-222. |
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| 作者姓名： | 李淑萍 朱京平 李斌 唐天同 |
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| 作者单位： | 西安交通大学,电子与信息工程学院,陕西省信息光子技术重点实验室,西安,710049 |
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| 基金项目： | 国家自然科学基金(60377020)资助 |
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| 摘 要： | 通过数值方法对线偏光在Littrow装置中的理想导体闪耀光栅的偏振特性进行研究.用时域有限差分程序计算出任意偏振方向线偏光经过闪耀光栅衍射后的电磁场分布,提取衍射波的S偏振和P偏振分量,讨论了与光栅闪耀角和入射光波偏振角的关系.分析了在1530～1570nm光谱范围内,入射光波为线偏振波和园偏振波时,衍射光波的偏振色散特性与光栅闪耀角的关系,并给出了存在偏振色散的光栅闪耀角范围.这些分析和结果对工程设计具有一定的指导意义.
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| 关 键 词： | 衍射 偏振特性 闪耀反射光栅 时域有限差分法 |
| 收稿时间： | 2009-07-02 |
| 修稿时间： | 2010-01-14 |
Diffraction Polarization Characteristics for Blazed Reflection Gratings |
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| LI Shu-ping,ZHU Jing-ping,LI Bin,TANG Tian-tong.Diffraction Polarization Characteristics for Blazed Reflection Gratings[J].Acta Photonica Sinica,2010,39(2):219-222. |
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| Authors: | LI Shu-ping ZHU Jing-ping LI Bin TANG Tian-tong |
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| Institution: | Shaanxi Key Laboratory of Information Photonics Technique;Xi'an Jiaotong University;Xi'an 710049;China |
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| Abstract: | The polarization states of the diffraction beams of nearly perfect conducting blazed gratings in Littrow mounting are studied by numerical simulation. A FDTD program was written and the electromagnetic fields for various polarized incident beams are calculated and the polarization states of the diffractive waves are extracted. The relation between the polarization state of the diffraction wave and the grating balzed angle and polarization angle for the linearly polarized incident wave is analyzed; In the spectral range of 1530 ~ 1570nm, the polarization dispersion is studied for the linearly and circularly polarized incident beam.The most important conclusions may be significative for the engineering design |
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| Keywords: | Diffraction Polarization characteristics Blazed reflection grating Finite difference time domain method |
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