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Three-dimensional memory effect in fluorescent photosensitive glass activated by europium and cerium

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Abstract

The persistent extinction of fluorescence emission of Eu3+ in glasses activated with europium and cerium is reported for the first time to the authors’ knowledge. The glass samples containing Eu3+ and Ce3+ were initially colorless and transparent and exhibited intense emission peaks at 592 and 612 nm assigned to the  5D07F1,2 transitions of Eu3+. The complete extinction of the Eu3+-ion emission was obtained as an effect of multipulse excimer-UV-laser λ=248 nm,τFWHM20 ns irradiation of the glass samples. Fluorescence microscopy, Mössbauer spectrometry, and electron spin resonance were applied for investigation of the modifications induced by the laser treatment. As a decisive proof of the extinction of fluorescence we succeeded in recording three-dimensional fluorescent photographic patterns within the activated samples.

© 1998 Optical Society of America

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