Temporally programmed free-induction decay

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Abstract
We have performed an experiment in atomic Yb vapor which provides the first demonstration that complex laser pulse-shape information can be stored in and recalled from the spectral distribution of the population in one terminal level of an inhomogeneously broadened optical transition. The information is stored as a result of interference between two temporally separated laser excitation pulses, one of which possesses a complex temporal structure. It is recalled as a feature of a third-excitation-pulse-induced free-decay signal. Recalled signals up to one percent as intense as the original were observed.