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Träfflista för sökning "(swepub) srt2:(1990-1994) pers:(Kristensson Gerhard) conttype:(refereed) srt2:(1993)"

Sökning: (swepub) srt2:(1990-1994) pers:(Kristensson Gerhard) conttype:(refereed) > (1993)

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1.
  • Fridén, Jonas, et al. (författare)
  • Transient electromagnetic wave propagation in anisotropic dispersive media
  • 1993
  • Ingår i: Journal of the Optical Society of America A: Optics and Image Science, and Vision. - 1084-7529. ; 10:12, s. 2618-2627
  • Tidskriftsartikel (refereegranskat)abstract
    • Transient electromagnetic wave propagation in a stratified, anisotropic, dispersive medium is considered. Specifically, the direct scattering problem is addressed. The dispersive, anisotropic medium is modeled by constitutive relations (a 3 3 matrix-valued susceptibility operator) containing time convolution integrals. In the general case, nine different susceptibility kernels characterize the medium. An incident plane wave impinges obliquely upon a finite slab consisting of a stratified anisotropic medium. The scattered fields are obtained as time convolutions of the incident field with the scattering kernels. The scattering (reflection and transmission) kernels are uniquely determined by the slab and are independent of the incident field. The scattering problem is solved by a wave-splitting technique. Two different methods for determining the scattering kernels are presented: an embedding and a Green's function approach. Explicit analytic expressions of the wave front are given for a special class of media. Some numerical examples illustrate the analysis.
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2.
  • Kristensson, Gerhard, et al. (författare)
  • Transient wave propagation in reciprocal bi-isotropic media at oblique incidence
  • 1993
  • Ingår i: Journal of Mathematical Physics. - : AIP Publishing. - 0022-2488 .- 1089-7658. ; 34:4, s. 1339-1359
  • Tidskriftsartikel (refereegranskat)abstract
    • In this paper a new wave splitting is suggested that simplifies the analysis of wave propagation in reciprocal bi-isotropic media. Two different methods to solve the scattering problem are analyzed: the invariant imbedding and the Green function approach. The medium is modeled by constitutive relations in the time domain (time convolutions) and the slab is assumed to be inhomogeneous with respect to the depth. It is shown that the cross-polarized contribution to the reflected field at normal incidence is zero for the general reciprocal inhomogeneous slab. Moreover, the rotation and the attenuation of the wave front are calculated explicitly in the general inhomogeneous slab case. Special attention is paid to normal incidence and to the homogeneous semi-infinite medium.
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  • Resultat 1-2 av 2
Typ av publikation
tidskriftsartikel (2)
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refereegranskat (2)
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Kristensson, Gerhard (2)
Rikte, Sten (1)
Fridén, Jonas (1)
Stewart, Rodney D. (1)
Lärosäte
Lunds universitet (2)
Språk
Engelska (2)
Forskningsämne (UKÄ/SCB)
Teknik (2)
År
1993 (2)Ta bort avgränsningen

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