Fourier-transform terahertz near-field imaging of one-dimensional slit arrays: mapping of electric-field-, magnetic-field-, and Poynting vectors

被引：117

作者：

Seo, M. A.

Adam, A. J. L.

Kang, J. H.

Lee, J. W.

Jeoung, S. C.

Park, Q. H.

Planken, P. C. M.

Kim, D. S.

机构：

[1] Delft Univ Technol, Fac Appl Phys, NL-2628 CJ Delft, Netherlands

[2] Seoul Natl Univ, Sch Phys & Astron, Seoul 151747, South Korea

[3] Korea Univ, Dept Phys, Seoul 136701, South Korea

[4] Korea Res Inst Stand & Sci, Opt Nano Metrol Grp, Taejon 305304, South Korea

来源：

OPTICS EXPRESS | 2007年 / 15卷 / 19期

关键词：

D O I：

10.1364/OE.15.011781

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We present 2D measurements of the full THz electric field behind a sample consisting of multiple slits in a metal foil. Our measurements, which have a sub-wavelength spatial, and a sub-period temporal resolution, reveal electric field lines, electric field vortices and saddle points. From our measurements we are able to reconstruct the magnetic field and, finally, the position and time-dependent Poynting vector which shows the flow of energy behind the sample. Our results show that it is possible to study the flow of light near sub-wavelength plasmonic structures such as slit-arrays and, by implication, other metamaterial samples. (C) 2007 Optical Society of America

引用

页码：11781 / 11789

页数：9

共 41 条

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