ABSTRACT
In the configuration represented in Figure 21.2, where the interface lies in the xzplane and the plane of incidence is the xy-plane, Eq.(21.7) reduces to zkxkzkxkxk zxzxix ττρρ +=+= (21.9) since at the interface. This equation is valid for all x and z provided that 0=y kρ
G and kτ
G
are coplanar with ik G
, that is,
0== zz kk τρ (21.10) Substituting Eq.(21.10), Eq.(21.9) becomes ϕθθ τρρ sinsinsin kkk ii == (21.11) where , andi ρθ θ ϕ are the angles between the wave vectors and the y-axis.
