Harmonic field representation of dielectric

In an absorbing medium the wave vector k, the dielectric constant , as well as transmission factors and those arising from boundary conditions are complex (cf. Eqs. (13)-(15)) Thus the graphical representation of resultant harmonic field (cf. Fig. 9) has to be modified in the following manner (cf. Fig. 10). The AM is replace by A M with... 

According to Jorgensen and Judd, hypersensitivity may occur due to pseudoquadrupole transitions [66]. Consequently an ion embedded in an inhomogeneous dielectric would exhibit hypersensitive behavior. These normally weak electric quadrupole transitions are probably intensified and become hypersensitive transitions. Hypersensitivity can also occur in symmetries of spherical harmonics (Ymk, with k = 1) which form totally symmetrical representations. Thus this permits their inclusion in the crystal field potential. 

---