Superluminal terahertz pulses

Research output: Contribution to journalArticle

59 Citations (Scopus)

Abstract

In femtosecond terahertz-pulse (T-ray) imaging of metal structures with dimensions of the order of the wavelength, it is observed that the T rays propagate faster than the vacuum speed of light. In the case of apertures this can be understood as a waveguide effect in which superluminal velocities are expected close to the cutoff frequency. However, the effect is also observed close to knife edges and in propagation past thin metal wires.
LanguageEnglish
Pages25-27
Number of pages2
JournalOptics Letters
Volume24
Issue number1
DOIs
Publication statusPublished - 1 Jan 1999

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rays
pulses
cut-off
apertures
wire
waveguides
vacuum
propagation
metals

Keywords

  • femtosecond terahertz-pulse
  • T-ray
  • metal structures
  • wavelength
  • speed of light
  • superluminal velocities

Cite this

Wynne, K. ; Jaroszynski, D.A. / Superluminal terahertz pulses. In: Optics Letters. 1999 ; Vol. 24, No. 1. pp. 25-27.
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Superluminal terahertz pulses. / Wynne, K.; Jaroszynski, D.A.

In: Optics Letters, Vol. 24, No. 1, 01.01.1999, p. 25-27.

Research output: Contribution to journalArticle

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AU - Jaroszynski, D.A.

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KW - femtosecond terahertz-pulse

KW - T-ray

KW - metal structures

KW - wavelength

KW - speed of light

KW - superluminal velocities

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