Abstract
The transient behavior of a frequency-swept optical pulse transmitted through a resonant vapor cell is observed by an optical sampling technique with ~20-fsec time resolution. The observed 200-fsec transients are the fastest intensity sampling measurement ever made on an atomic vapor and provide a precise determination of the time-varying phase of the pulse. The observed phase shows deviations from a linear frequency sweep, which may account for previous limits on pulse compression.
© 1986 Optical Society of America
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