Abstract

We demonstrate nonvolatile storage of femtosecond pulses in a photorefractive LiNbO<sub>3</sub> crystal with recording and readout of spectral holograms at wavelengths of 460 and 920 nm, respectively. No degradation was observed after 24 h of continuous readout. We also show that we can realize the time-lens effect with our system by appropriately setting the ratio of the recording and the reconstruction wavelengths and the spectral resolution of the recording and the reconstruction processes.

© 1998 Optical Society of America

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