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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Vol. 24, Iss. 1 — Jan. 1, 1999
  • pp: 25–27

Superluminal terahertz pulses

Klaas Wynne and Dino A. Jaroszynski  »View Author Affiliations


Optics Letters, Vol. 24, Issue 1, pp. 25-27 (1999)
http://dx.doi.org/10.1364/OL.24.000025


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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.

© 1999 Optical Society of America

OCIS Codes
(110.3080) Imaging systems : Infrared imaging
(320.0320) Ultrafast optics : Ultrafast optics
(320.2250) Ultrafast optics : Femtosecond phenomena
(320.5540) Ultrafast optics : Pulse shaping
(350.5500) Other areas of optics : Propagation

Citation
Klaas Wynne and Dino A. Jaroszynski, "Superluminal terahertz pulses," Opt. Lett. 24, 25-27 (1999)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-24-1-25

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