本文選題：零折射特異電磁介質(zhì) + Mie散射理論�。� 參考：《物理學(xué)報(bào)》2015年03期

【摘要】：本文基于二維磁性柱周期陣列設(shè)計(jì)了具有等效零折射率的磁性特異電磁介質(zhì).通過(guò)多重散射理論計(jì)算體系的光子能帶和等效介質(zhì)理論提取體系的等效電磁參量可以確定該磁性特異電磁介質(zhì)可以實(shí)現(xiàn)等效介電常數(shù)和等效磁導(dǎo)率同時(shí)為零.利用該雙零磁性特異電磁介質(zhì)可以實(shí)現(xiàn)電磁波在無(wú)相位延遲下的傳輸,從而可以調(diào)控電磁波的空間相位變化.進(jìn)而,通過(guò)設(shè)計(jì)具有不同電磁波輸出界面的構(gòu)型實(shí)現(xiàn)了高斯光束的波前由平面轉(zhuǎn)變成柱面,還可以實(shí)現(xiàn)高斯光束的聚焦和高斯光束的分束.也可以根據(jù)需要設(shè)計(jì)具有更為一般的輸出界面,實(shí)現(xiàn)更為多樣的電磁波波前的調(diào)控.而且,磁性材料的電磁特性可以通過(guò)溫度和外加磁場(chǎng)進(jìn)行調(diào)制,因此該雙零磁性特異電磁介質(zhì)的工作頻率可以靈活控制,這更便于電磁波器件的設(shè)計(jì)和應(yīng)用.
[Abstract]:In this paper, a magnetic specific electromagnetic medium with equivalent zero refractive index is designed based on two-dimensional magnetic cylindrical periodic array. By calculating the photon band of the system and the equivalent electromagnetic parameters of the system extracted by the theory of equivalent medium, the equivalent dielectric constant and the equivalent permeability of the magnetic specific electromagnetic medium can be determined to be zero at the same time. The transmission of electromagnetic wave without phase delay can be realized by using the double zero magnetic specific electromagnetic medium, thus the spatial phase change of electromagnetic wave can be regulated. Furthermore, the wavefront of Gao Si beam can be transformed from plane to cylinder by designing the configuration with different electromagnetic wave output interface. The focusing of Gao Si beam and the beam splitting of Gao Si beam can also be realized. A more general output interface can also be designed according to the need to achieve a more diverse control of electromagnetic wavefront. Moreover, the electromagnetic properties of magnetic materials can be modulated by temperature and external magnetic field, so the working frequency of the double zero magnetic specific electromagnetic medium can be flexibly controlled, which is more convenient for the design and application of electromagnetic wave devices.
【作者單位】： 浙江師范大學(xué)光學(xué)研究所;復(fù)旦大學(xué)表面物理國(guó)家重點(diǎn)實(shí)驗(yàn)室;
【基金】：國(guó)家自然科學(xué)基金(批準(zhǔn)號(hào):11274277) 復(fù)旦大學(xué)表面物理國(guó)家重點(diǎn)實(shí)驗(yàn)室開(kāi)放項(xiàng)目(批準(zhǔn)號(hào):KF2013_6) 浙江師范大學(xué)創(chuàng)新團(tuán)隊(duì)項(xiàng)目資助的課題~~
【分類號(hào)】：O441

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【共引文獻(xiàn)】

相關(guān)期刊論文 前3條

1 司黎明;侯吉旋;劉W，

本文編號(hào)：2118070