Optimization of enhanced terahertz transmission through arrays of subwavelength apertures

被引：39

作者：

Janke, C ^{[1
]}

Rivas, JG ^{[1
]}

Schotsch, C ^{[1
]}

Beckmann, L ^{[1
]}

Bolivar, PH ^{[1
]}

Kurz, H ^{[1
]}

机构：

[1] Rhein Westfal TH Aachen, Inst Halbleitertech, D-52056 Aachen, Germany

来源：

PHYSICAL REVIEW B | 2004年 / 69卷 / 20期

关键词：

D O I：

10.1103/PhysRevB.69.205314

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A detailed study of enhanced transmission of terahertz (THz) radiation through arrays of subwavelength apertures structured in n-type silicon is presented. The enhancement is attributed to the resonant tunneling of surface-plasmon polaritons (SPP's) that can be excited at THz wavelengths in doped semiconductors. We investigate the dependence of the transmission as a function of aperture size and sample thickness. The transmission increases significantly as the aperture size is augmented and as the array thickness is reduced. The data confirm the tunneling character of the SPP phenomenon. Transmission efficiencies larger than unity for aperture sizes well below the cutoff wavelength are achieved.

引用

页码：205314 / 1

页数：5

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