期刊文献+

高衍射效率金属介质膜光栅的设计及性能分析 被引量:2

Design and Analysis of High Efficiency Metal-Multi-layer Dielectric Grating
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摘要 基于严格耦合波理论,分析了金属介质膜光栅的衍射性能,以-1级衍射效率为评价函数,研究了表面浮雕结构分别为HfO2和Si O2材料的金属介质膜光栅,获得衍射效率优于99%的结构参数。数值计算表明,当顶层光栅结构为HfO2和Si O2的槽深分别为80nm和225 nm时,在1 053 nm处获得接近100%的衍射效率。 The diffraction characteristic of metal and multi-layer dielectric grating(MMDG) was analyzed with the method of rigorous coupled wave.Taking the-1 order diffraction efficiency above 99% as the merit function,the parameters of MMDG are optimized with the top layer being HfO2 and SiO2,respectively.Numerical calculation shows that the diffraction efficiency can be closed to 100% when the groove depths are 80 nm for HfO2 and 225 nm for SiO2 on the top surface.
出处 《青岛大学学报(自然科学版)》 CAS 2010年第4期41-45,共5页 Journal of Qingdao University(Natural Science Edition)
基金 国家自然科学基金项目(10804060 10904080) 山东省教育厅科技计划项目(J08LI05)
关键词 金属介质模光栅 耦合波 衍射效率 超短激光脉冲 metal-multi-layer dielectric grating coupled wave diffraction efficiency ultrashort laser pulse
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参考文献7

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二级参考文献16

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