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 ana 612 nm assigned to the (5)D0-F-7(1,2) transitions of EU3+. Th, complete extinction of the Eu3+-ion emission was obtained as an effect of multipulse excimer-UV-laser (lambda = 248 nm, tau(FWHM) greater than or equal to 20 ns) irradiation of the glass samples. Fluorescence microscopy, Mossbauer 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 me succeeded in recording three-dimensional fluorescent photographic patterns within the activated samples. (C) 1998 Optical Society of America. [References: 16]
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