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Recently, essentially distortion-free electrical pulse propagation of ~100 GHz bandwidth pulses was reported on YBa2Cu3O7-δ (YBCO) superconducting transmission lines [1]. Here, we report on the launching and propagation of 1-ps electrical pulses onto a superconducting YBCO coplanar stripline. The high-Tc transmission lines are defined on LaGaO3 as a substrate. LaGaO3 allows highly oriented growth of YBCO films and has dielectric losses smaller than cubic zirconia and a low dielectric constant in the d.c. to 1 THz range [2].
© 1988 Optical Society of America
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