Abstract

We have developed nonlinear transmission lines (NLTLs) having the fastest output transition times yet reported for electronic circuits: waveforms with 630 fs, 1 V edges, measured at T = 300 K. These circuits were realized on GaAs with a pulse-doped profile for maximum capacitance-voltage nonlinearity, and measured with on-chip integrated sampling circuits strobed by identical NLTLs. This epitaxial profile also allows high-cutoff-frequency sampling diodes by a simple etching process, enabling us to combine two essential requirements for an ultrafast electronic circuit onto one monolithic IC.

© 1994 Optical Society of America