Abstract
We have observed spatial-image storage and phase conjugation, using a backward-stimulated echo in a solid sample. The image storage and the delayed phase conjugation were observed to last for at least 15 sec, which is 3 × 105 times longer than the radiative lifetime of the excited state. The backward-stimulated echo produced on the 3H4–3P0 transition of Pr3+:LaF3 is found to be a phase-conjugated spatial reproduction of the first excitation pulse. The image storage time depends strongly on the sample temperature.
© 1987 Optical Society of America
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