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Leaky modes of a left-handed slab

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Figure

Figure 1: The LHM slab of thickness h surrounded by right-handed media.
Figure 2: Modulus of the field for a thick left-handed slab with ǫ 1 = ǫ 3 = µ 1 = µ 3 = 1, ǫ 2 = − 3,µ 2 = − 1 and h = 60 λ using a gaussian incident beam with a waist of 20 λ and an incidence angle of θ = 45.
Figure 4: Location of the poles in the k α 0 complex plane for different values of h with ε 1 = 9, µ 1 = µ 3 = ε 3 = 1 and (a) ε 2 = − 0.5 and µ 2 = − 1.5, showing a forward surface mode and (b) ε 2 = − 5 and µ 2 = − 0.5, showing a backward surface mode.
Figure 5: Modulus of the field for a left-handed slab with ǫ 1 = 9,ǫ 3 = µ 1 = µ 3 = 1, ǫ 2 = − 0.5,µ 2 = − 1.5 and h = 0.6 λ using a gaussian incident beam with a waist of 20 λ and an incidence angle of θ = 21.496
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