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- W2022046898 abstract "Ultrabroad near-infrared (NIR) photoluminescence from Ni2+-centers in nanocrystalline Ba-Al titanate glass ceramics was studied by temperature-dependent static and dynamic photoluminescence spectroscopy in the regime of 10 to 300 K. Photoluminescence covers the spectral range of about 1100 nm to >1600 nm with a typical bandwidth (FWHM) greater than 300 nm. For UV-LED excitation at 352 nm, an internal quantum efficiency of 65% is obtained. The excited state lifetime τ at room temperature is 39 μs. The stimulated emission cross section σem is 8.5×10−20 cm2, resulting in a practical figure of merit, σem*τ, of 3.3×10−24 cm2 s at room temperature. These properties suggest suitability as a broadband gain medium for tunable lasers and optical amplifiers." @default.
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- W2022046898 date "2012-03-23" @default.
- W2022046898 modified "2023-09-26" @default.
- W2022046898 title "Temperature dependence and quantum efficiency of ultrabroad NIR photoluminescence from Ni^2+centers in nanocrystalline Ba-Al titanate glass ceramics" @default.
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- W2022046898 doi "https://doi.org/10.1364/ol.37.001166" @default.
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