Experimental demonstration of data erasure for time-domain optical memories

Abstract

Data erasure is considered an essential requirement for a practical optical time-domain memory, and it requires that the laser used have very good frequency stability. Such a laser is developed for this work, and data erasure is demonstrated with a sample of ${\mathrm{YSiO}}_5:{\mathrm{Eu}}^{3+}$ for write/rewrite pulse sequences of up to a duration of 100 µs. This is two orders of magnitude longer than had been achieved previously. Phase-sensitive detection is introduced and is shown to be invaluable for monitoring the write, rewrite, and read processes.

© 1999 Optical Society of America

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