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Two red-wave light mixing amplification in Cu:KNSBN is extensively studied through the gain versus the grating wavelength. The crystal has shown excellent response in the red region. The time evolution of the diffraction efficiency is also investigated.
The spectroscopic properties of Cr 4+ in MgCaBa aluminate glass at 15 K have been studied using time-resolved fluorescence measurements. It is found that the luminescence of Cr 4+ in the glass is from Cr 4+ ions in both high and low crystalline field sites. With increasing delays the broadband emission observed at early times gradually evolves into a narrow...
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