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Journal of the Optical Society of America B

Journal of the Optical Society of America B

| OPTICAL PHYSICS

  • Vol. 15, Iss. 7 — Jul. 1, 1998
  • pp: 1953–1959

Spatiotemporal shaping of half-cycle terahertz pulses by diffraction through conductive apertures of finite thickness

Jake Bromage, Stojan Radic, G. P. Agrawal, C. R. Stroud, P. M. Fauchet, and Roman Sobolewski  »View Author Affiliations


JOSA B, Vol. 15, Issue 7, pp. 1953-1959 (1998)
http://dx.doi.org/10.1364/JOSAB.15.001953


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Abstract

We demonstrate a simple quasi-optical technique for spatiotemporal shaping of half-cycle terahertz-radiation pulses. We show, both experimentally and theoretically, that properly polarized half-cycle pulses can be modulated temporally by diffraction through a conductive aperture of finite thickness. We use the finite-difference time-domain method to solve Maxwell s equations for such a geometry and show that it can explain all the experimentally observed features. In the case of a thick aperture, a planar waveguide model can also be used to describe the propagation of the pulse through the aperture, with excellent agreement with the experimental results. 1998 Optical Society of America S0740-3224(98)03903-4

[Optical Society of America ]

OCIS Codes
(050.1220) Diffraction and gratings : Apertures
(080.0080) Geometric optics : Geometric optics
(320.5540) Ultrafast optics : Pulse shaping
(320.5550) Ultrafast optics : Pulses

Citation
Jake Bromage, Stojan Radic, G. P. Agrawal, C. R. Stroud, P. M. Fauchet, and Roman Sobolewski, "Spatiotemporal shaping of half-cycle terahertz pulses by diffraction through conductive apertures of finite thickness," J. Opt. Soc. Am. B 15, 1953-1959 (1998)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-15-7-1953

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