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