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With an increase in the application of ultra-wideband (UWB) electromagneticpulses in the communications industry, radar, biotechnology and medicine, comesan interest in UWB exposure safety standards. Despite an increase of thescientific research on bioeffects of exposure to non-ionizing UWB pulses,characterization of those effects is far from complete. A numericalcomputational approach, such as a finite-difference time domain (FDTD) method,is required to visualize and understand the complexity of broadbandelectromagnetic interactions. The FDTD method has almost no limits in thedescription of the geometrical and dispersive properties of the simulatedmaterial, it is numerically robust and appropriate for current computertechnology. In this paper, a complete calculation of exposure of the human eyeto UWB electromagnetic pulses in the frequency range of 3.1-10.6, 22-29, and57-64 GHz is performed. Computation in this frequency range required ageometrical resolution of the eye of $\rm 0.1 \: mm$ and an arbitrary precisionin the description of its dielectric properties in terms of the Debye model.New results show that the interaction of UWB pulses with the eye tissuesexhibits the same properties as the interaction of the continuouselectromagnetic waves (CW) with the frequencies from the pulse's frequencyspectrum. It is also shown that under the same exposure conditions the exposureto UWB pulses is from one to many orders of magnitude safer than the exposureto CW.

FDTD Computation of Human Eye Exposure to Ultra-wideband Electromagnetic Pulses