Electromagnetic pulses in Maxwell-Hopkinson dielectrics

A pulse is solution of a boundary-initial value problem for the wave equati on. We investigate the propagation in the z-direction of a Maxwell-Hopkinso n dielectric of three kinds of pulses launched from the z = 0 plane at some time: harmonic plane wave. Bessel wave, distortion-free progressing wave. We prove that at high frequency, and as soon as the transient state has die d out, these pulses propagate with an exponential attenuation factor in the direction of propagation.