Abstract
A transparent SiO2–Al2O3–LiF–YF3 glass ceramic doped with Nd3+ was fabricated by melt quenching and subsequent heating. X-ray diffraction and transmission electron microscope results demonstrated that orthorhombic β-YF3 nanocrystals with a mean size of 23nm were homogeneously precipitated among the glass matrix. Confirmed by the energy dispersive x-ray spectroscopy measurements, the crystal-like absorption and emission of Nd3+ indicated the partition of Nd3+ into YF3 nanocrystals in the glass ceramic. Detailed characterizations of the Stark components of the I9∕24, I11∕24, and I13∕24 manifolds were performed using the low temperature fluorescence spectra for F3∕24→I9∕24, F3∕24→I11∕24, and F3∕24→I13∕24 transitions of Nd3+ in the glass ceramic. The stimulated emission cross sections of the F3∕24→I11∕24 intermanifold transition and the F3∕24(R1)→I11∕24(Y1) inter-Stark transition were determined to be 7.24×10−20 and 11.55×10−20cm2, respectively, being preferable to those of Nd3+-doped laser glasses and glass ceramic embedding (Pb,Cd)F2 nanocrystals.
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