混合雙曲色散性超解析鏡頭之設計方法

此研究提出一個具有超解析成像的新穎元件，稱作Hybrid-Superlens Hyperlens。這個元件是由多層金屬與介電質交錯堆疊而成:上半平板超透鏡(upper planar-superlens)以及下半部柱狀雙曲超透鏡(lower cylindrical-hyperlens)，上半部與下半部的超透鏡皆具有介電係數張量在主對角元素為異號的性質。並且上半部與下半部所具有的等頻率的色散曲線分別是左右開口以及上下開口的特徵。藉由有限元素分析法模擬證實我們所設計的混合式透鏡在入射光405nm照射下，可達100 nm的解析度。

關鍵字

顯微鏡；光學繞射極限的解析度；異向性光學材料；超穎材料

並列摘要

This study proposes an innovative device called “Hybrid-Superlens-Hyperlens” with superresolution imaging ability and confirms it by using simulation. This device consists of two multi-layered metal-dielectric anisotropic metamaterials: the upper planar-superlens and the lower cylindrical-hyperlens with different signs in their dielectric tensors and different isofrequency dispersion curves. In our simulation, 100 nm center-to-center resolution is obtained by using incident wavelength of 405 nm, which is smaller than the optical diffraction limit at this wavelength.

並列關鍵字

Microscopy ； Resolution ； Anisotropic optical materials ； Metamaterial

參考文獻

[1] E. Abbe, “Beitrage zur Theorie des Mikroskops und der mikroskopischen Wahrnehmung,” Arch. Mikr. Anat. 9, 413–468 (1873).

[3] Sommerfeld, A. Ueber die Fortpflanzung elektrodynamischer Wellen laengs eines Drahtes. Ann. Phys. Chem. 303, 233–290 (1899).

[4] Heisenberg, W. Ueber den anschaulichen Inhalt der quantentheoretischen Kinematik und Mechanik. Z. Phys. 43, 172–198 (1927).

[6] S. Kawata, Y. Inouye and P. Verma, "Plasmonics for near-field nano-imaging and superlensing," Nat. Photonics 3, 388-394 (2009).

[7] Raether, H. Surface Plasmons (Springer, 1998).

國際替代計量

混合雙曲色散性超解析鏡頭之設計方法

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