Ultrawideband electromagnetic pulse propagation in triply-distilled water

The observed dynamical field evolution due to an input ultrawideband electromagnetic pulse as it propagates through a complex dispersive medium is primarily due to the causal model components of the dielectric permittivity dispersion that is spanned by the bandwidth of the input pulse, The various model components of a given dispersive medium may then be probed individually by a properly designed ultrawideband pulse so that, by varying the carrier frequency of the input pulse, different features may be studied and their associated parameter values may possibly be extracted. An ideal pulse for this purpose is the rectangular envelope modulated signal since it is always ultrawideband even though it may not be ultrashort, The initial pulse width may then be tailored so that its spectrum may sample any desired feature in the dielectric dispersion of the chosen material.