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Search: (WFRF:(Jaksic Zoran)) > (2009)

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  • Dalarsson, Mariana, et al. (author)
  • Exact analytical solution for oblique incidence on a graded index interface between a right-handed and a left-handed material
  • 2009
  • In: Journal of Optoelectronic and Biomedical Materials. - 2066-0049. ; 1:4, s. 345-352
  • Journal article (peer-reviewed)abstract
    • We have determined the scattering parameters of optical structures incorporating both left-handed metamaterials (LHM) and conventional ("right-handed") materials (RHM) for the case when the refractive index at the LHM-RHM interface is graded, for oblique incidence at an arbitrary angle and for arbitrary spectral dispersion. We derived an accurate analytical solution to Helmholtz' equation for the case of the refractive index gradient varying as a hyperbolic tangent where the steepness of the index transition may be arbitrary, even of the order of vacuum wavelength. We determined the expressions for the field intensity along the LHM-RHM structure with refractive index gradient. We show that there is an excellent agreement between our analytical results and the accurate numerical simulations done by finite element method.
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2.
  • Dalarsson, Mariana, et al. (author)
  • Structures Containing Left-Handed Metamaterials with Refractive Index Gradient : Exact Analytical Versus Numerical Treatment
  • 2009
  • In: Microwave Review. - Belgrade, Serbia : Society for Microwave Technique, Technologies and Systems. - 1450-5835. ; 15:2, s. 2-5
  • Journal article (peer-reviewed)abstract
    • We investigated propagation of electromagnetic waves through composite structures with negative refractive index, the popular ”left-handed metamaterials”, for the case when there is a gradient of refractive index. We obtained the exact analytical solutions to the Helmholtz equation valid for arbitrary steepness of the graded interface between the positive and the negative index part. We analyzed the special case of matched impedances of the two constituent materials within the metamaterial composite. We derived analytical expressions for the field intensity, transmission and reflection coefficients and compared them with the results obtained by the numerical simulations using the Finite Element Method. The model allows for arbitrary spectral dispersion and lossy media.
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  • Result 1-2 of 2
Type of publication
journal article (2)
Type of content
peer-reviewed (2)
Author/Editor
Dalarsson, Mariana (2)
Jaksic, Zoran (2)
Tassin, Philippe (1)
Tassin, Philippe, 19 ... (1)
University
Royal Institute of Technology (2)
Chalmers University of Technology (1)
Language
English (2)
Research subject (UKÄ/SCB)
Engineering and Technology (2)
Natural sciences (1)
Year
2009 (2)Undo refine

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