Anomalous relaxation of stimulated echo in piezoelectric crystals
Asadullin Ya. Ya. , Berezov V. M. , Korepanov V. D., Romanov V. S.
Stimulated (three-pulse) echo was observed in a number of piezoelectric crystals, with an amplitude that decreased non-exponentially; the maximum time constant was on the order of dozens of minutes and more. Cumulative enhancement of the echo was observed when a series of pulse pairs was applied beforehand.