Effect of spherical aberration and surface waves on propagation of lens-coupled terahertz pulses
Optics Letters, Vol. 30, Issue 6, pp. 673-675 (2005)
http://dx.doi.org/10.1364/OL.30.000673
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Abstract
Spatiotemporal measurements of a near-single-cycle terahertz pulse emitted from a photoconductive switch terahertz (THz) source show the effects of spherical aberration and surface waves on the pulse shape. The measured phase front has a swallow-tail shape described by catastrophe theory that contributes to the concentric ring structure of THz beam profiles. A time-of-flight model shows that the pulse shape is due to propagation along a cusp caustic and enhancement of the wings of the swallow-tail pulse is caused by surface waves.
© 2005 Optical Society of America
OCIS Codes
(080.1010) Geometric optics : Aberrations (global)
(260.3090) Physical optics : Infrared, far
(320.5550) Ultrafast optics : Pulses
Citation
M. T. Reiten and R. A. Cheville, "Effect of spherical aberration and surface waves on propagation of lens-coupled terahertz pulses," Opt. Lett. 30, 673-675 (2005)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-30-6-673
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