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

M. A. Seo; A. J.L. Adam; J. H. Kang; J. W. Lee; S. C. Jeoung; Q. H. Park; P. C.M. Planken; D. S. Kim

doi:10.1364/OE.15.011781

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

M. A. Seo, A. J.L. Adam, J. H. Kang, J. W. Lee, S. C. Jeoung, Q. H. Park, P. C.M. Planken, D. S. Kim

Department of Physics

Research output: Contribution to journal › Article › peer-review

125 Citations (Scopus)

Abstract

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.

Original language	English
Pages (from-to)	11781-11789
Number of pages	9
Journal	Optics Express
Volume	15
Issue number	19
DOIs	https://doi.org/10.1364/OE.15.011781
Publication status	Published - 2007 Sep 17

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics

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

In: Optics Express, Vol. 15, No. 19, 17.09.2007, p. 11781-11789.

Research output: Contribution to journal › Article › peer-review

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abstract = "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.",

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AU - Adam, A. J.L.

AU - Kang, J. H.

AU - Lee, J. W.

AU - Jeoung, S. C.

AU - Park, Q. H.

AU - Planken, P. C.M.

AU - Kim, D. S.

PY - 2007/9/17

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

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