Advanced terahertz electric near-field measurements at sub-wavelength diameter metallic apertures

A. J.L. Adam; J. M. Brok; M. A. Seo; K. J. Ahn; D. S. Kim; J. H. Kang; Q. H. Park; M. Nagel; P. C.M. Planken

doi:10.1364/OE.16.007407

Advanced terahertz electric near-field measurements at sub-wavelength diameter metallic apertures

A. J.L. Adam, J. M. Brok, M. A. Seo, K. J. Ahn, D. S. Kim, J. H. Kang, Q. H. Park, M. Nagel, P. C.M. Planken

Department of Physics

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

100 Citations (Scopus)

Abstract

Using terahertz-light excitation, we have measured with sub-wavelength spatial, and sub-cycle temporal resolution the time- and frequency-dependent electric-field and surface-charge density in the vicinity of small metallic holes. In addition to a singularity like concentration of the electric field near the hole edges, we observe, that holes can act as differential operators whose near-field output is the time-derivative of the incident electric field. Our results confirm the well-known predictions made by Bouwkamp, Philips Res. Rep. 5, 321-332 (1950), and reveal, with unprecedented detail, what physically happens when light passes through a small hole.

Original language	English
Pages (from-to)	7407-7417
Number of pages	11
Journal	Optics Express
Volume	16
Issue number	10
DOIs	https://doi.org/10.1364/OE.16.007407
Publication status	Published - 2008 May 12

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics

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10.1364/OE.16.007407

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title = "Advanced terahertz electric near-field measurements at sub-wavelength diameter metallic apertures",

abstract = "Using terahertz-light excitation, we have measured with sub-wavelength spatial, and sub-cycle temporal resolution the time- and frequency-dependent electric-field and surface-charge density in the vicinity of small metallic holes. In addition to a singularity like concentration of the electric field near the hole edges, we observe, that holes can act as differential operators whose near-field output is the time-derivative of the incident electric field. Our results confirm the well-known predictions made by Bouwkamp, Philips Res. Rep. 5, 321-332 (1950), and reveal, with unprecedented detail, what physically happens when light passes through a small hole.",

author = "Adam, {A. J.L.} and Brok, {J. M.} and Seo, {M. A.} and Ahn, {K. J.} and Kim, {D. S.} and Kang, {J. H.} and Park, {Q. H.} and M. Nagel and Planken, {P. C.M.}",

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T1 - Advanced terahertz electric near-field measurements at sub-wavelength diameter metallic apertures

AU - Adam, A. J.L.

AU - Brok, J. M.

AU - Seo, M. A.

AU - Ahn, K. J.

AU - Kim, D. S.

AU - Kang, J. H.

AU - Park, Q. H.

AU - Nagel, M.

AU - Planken, P. C.M.

PY - 2008/5/12

Y1 - 2008/5/12

N2 - Using terahertz-light excitation, we have measured with sub-wavelength spatial, and sub-cycle temporal resolution the time- and frequency-dependent electric-field and surface-charge density in the vicinity of small metallic holes. In addition to a singularity like concentration of the electric field near the hole edges, we observe, that holes can act as differential operators whose near-field output is the time-derivative of the incident electric field. Our results confirm the well-known predictions made by Bouwkamp, Philips Res. Rep. 5, 321-332 (1950), and reveal, with unprecedented detail, what physically happens when light passes through a small hole.

AB - Using terahertz-light excitation, we have measured with sub-wavelength spatial, and sub-cycle temporal resolution the time- and frequency-dependent electric-field and surface-charge density in the vicinity of small metallic holes. In addition to a singularity like concentration of the electric field near the hole edges, we observe, that holes can act as differential operators whose near-field output is the time-derivative of the incident electric field. Our results confirm the well-known predictions made by Bouwkamp, Philips Res. Rep. 5, 321-332 (1950), and reveal, with unprecedented detail, what physically happens when light passes through a small hole.

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Advanced terahertz electric near-field measurements at sub-wavelength diameter metallic apertures

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