Electromagnetic diffraction analysis of 2-D antireflective subwavelength grating with coned profile

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作者
Zhang, Dianwen [1 ]
Lu, Zhenwu [1 ]
Yu, Weixing [1 ]
Li, Fengyou [1 ]
机构
[1] Fine Mech. and Phys., Chinese Acad. of Sci., Changchun 130022, China
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Diffraction - Diffraction gratings - Electromagnetic wave diffraction;
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摘要
2D subwavelength multilevel (2-, 4-, 8-, etc. levels) columned stairstep grating with coned spatial profile has been designed to reduce reflection. The rigorous coupled-wave theory is employed to analyze the electromagnetic diffraction property of the columned stairstep grid grating. The structure is shown to achieve extremely low reflectance over a wide of view and a wide light wave band.
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页码:273 / 280
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