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Electromagnetic shock waves from transmission lines
Phys. Rev. Lett. 59, 1663 – Published 12 October, 1987
DOI: https://doi.org/10.1103/PhysRevLett.59.1663
Abstract
We have observed subpicosecond electrical pulses to propagate on 5-μm coplanar transmission lines at velocities faster than the phase velocity in the underlying dielectric. This situation produces an electromagnetic shock wave in a manner similar to Cherenkov radiation and electro-optic Cherenkov radiation. Using time-domain spectroscopy we have measured the strong frequency-dependent loss of energy in the propagating electrical pulse due to this radiation.
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