TY - JOUR
T1 - Propagation constant - Limited surface modes in dielectric superlattices
AU - Ramos-Mendieta, F.
AU - Halevi, P.
PY - 1996/8/1
Y1 - 1996/8/1
N2 - The surface modes of a dielectric superlattice - their very existence - depend strongly on the position of the surface (the cut-plane through the last cell). For example, TE and TM surface waves can propagate even when the layer next to the surface is made of lower-index material. In this case we find a novel TE mode where the propagation constant is limited by a bulk band. For TM polarization, the propagation constant may be limited due to a different mechanism, namely the internal (within the dielectric layers εa, εb) Brewster effect. This upper bound is k0[εaεb/(εa+ εb)]1/2, where k0is the vacuum propagation constant.
AB - The surface modes of a dielectric superlattice - their very existence - depend strongly on the position of the surface (the cut-plane through the last cell). For example, TE and TM surface waves can propagate even when the layer next to the surface is made of lower-index material. In this case we find a novel TE mode where the propagation constant is limited by a bulk band. For TM polarization, the propagation constant may be limited due to a different mechanism, namely the internal (within the dielectric layers εa, εb) Brewster effect. This upper bound is k0[εaεb/(εa+ εb)]1/2, where k0is the vacuum propagation constant.
U2 - 10.1016/0030-4018(96)00202-7
DO - 10.1016/0030-4018(96)00202-7
M3 - Article
SN - 0030-4018
SP - 1
EP - 5
JO - Optics Communications
JF - Optics Communications
ER -