arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2004.11272cond-mat.mes-hallphysics.optics
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硅纳米盘的角度依赖性和反极性模的吸收特性

Angular dependence and absorption properties of the anapolemode of Si nano-disks

Lucia Fornasari, Marco Passoni, Franco Marabelli, Yuyao Chen, Yu Wang, Luca Dal Negro

摘要:

对硅纳米盘阵列中的阿那普尔模的偏振和角度分辨光学响应进行了实验和理论研究。测量数据和模拟之间的良好协议收益率的anapole模式behaviorthat表现出不同的功能TE或TM偏振激发的一致描述。散射矩阵计算使我们能够解开散射和漫射光的贡献,并提供一个定量估计的吸光度增强相关的2D激发的anapole模式。我们进行了多极分解的远场散射辐射的TE和TM偏振和明确地确定了anapole共振条件与实验结果在很大范围内的入射角。我们的研究结果表明,可控激发的电磁anapole模式在工程阵列的硅纳米盘的发展与增强光-物质相互作用的光学纳米结构

英文摘要:

The polarization- and angle- resolved optical response of the anapole mode in silicon nano-disks array have been experimentally and theoretically investigated. The good agreement betweenmeasured data and simulations yields to a consistent description of the anapole mode behaviorthat exhibits different features for TE or TM polarization excitation. Scattering matrix calculationallows us to disentangle scattered and diffused light contributions and to provide a quantitativeestimation of the absorbance enhancement associated to 2D excitation of the anapole mode. Weperformed the multipolar decomposition of the far-field scattered radiation for both TE and TMpolarizations and unambiguously identified the anapole resonant condition in excellent agreementwith the experimental results over a large range of incident angles. Our findings demonstrate thecontrolled excitation of electromagnetic anapole modes in engineered arrays of silicon nano-disksfor the development of optical nanostructures with enhanced light-matter interaction

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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