Abstract
We report on the enhancement of the Physikalisch-Technische Bundesanstalt's (PTB's) ultrafast optoelectronic measurement facility by characterizing the full impulse and step response of a 70-GHz sampling oscilloscope. A novel optoelectronic technique for the generation and the detection of ultrashort voltage pulses, which serve as calibration signals for the oscilloscope, is introduced. The uncertainty of the oscilloscope's time-domain response is derived from a Monte Carlo analysis. Aside from a more complete characterization, our enhanced technique considerably reduces the uncertainty of rise-time measurements.
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