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Journal of the Optical Society of America A

Journal of the Optical Society of America A

| OPTICS, IMAGE SCIENCE, AND VISION

  • Vol. 18, Iss. 7 — Jul. 1, 2001
  • pp: 1704–1713

Asymptotic description of pulsed ultrawideband electromagnetic beam field propagation in dispersive, attenuative media

Kurt Edmund Oughstun  »View Author Affiliations


JOSA A, Vol. 18, Issue 7, pp. 1704-1713 (2001)
http://dx.doi.org/10.1364/JOSAA.18.001704


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Abstract

The asymptotic description of the coupled spatial and temporal evolution of a pulsed ultrawideband electromagnetic beam field as it propagates through a dispersive, attenuative material that occupies the half-space z≥z0 is obtained from the angular spectrum of plane waves representation. This angular-spectrum representation expresses the wave field as a superposition of both homogeneous and inhomogeneous plane waves. The paraxial approximation of the spatial part of this representation for nontruncated beam fields results in a description that explicitly displays the temporal evolution of the pulsed-beam field through a single-contour integral that is of the same form as that obtained for a pulsed plane-wave field propagating in the positive z direction in a lossy, dispersive medium. The accuracy of this paraxial approximation is shown to improve as the material’s attenuation increases.

© 2001 Optical Society of America

OCIS Codes
(260.1960) Physical optics : Diffraction theory
(260.2030) Physical optics : Dispersion
(260.2110) Physical optics : Electromagnetic optics
(320.5550) Ultrafast optics : Pulses

Citation
Kurt Edmund Oughstun, "Asymptotic description of pulsed ultrawideband electromagnetic beam field propagation in dispersive, attenuative media," J. Opt. Soc. Am. A 18, 1704-1713 (2001)
http://www.opticsinfobase.org/josaa/abstract.cfm?URI=josaa-18-7-1704

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