HYDROTHERMAL GARNET CRYSTALS: HYDROTHERMAL CRYSTAL GROWTH OF CALCIUM ALUMINOSILICATE GARNET CONTAINING DIVALENT RARE EARTH IONS
Final technical summary rept., 16 Jul 1964-15 Jul 1965
UNION CARBIDE CORP TONAWANDA NY LINDE DIV
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The aim of this research was the hydrothermal growth of single crystals of grossular garnet, Ca3Al2Si3O12, containing divalent activator ions such as Eu, Sm, Gd, Ce and Mn. Such crystals were desired as possible new laser materials with efficient pumping and high fluorescent yield characteristics. Hydrothermal processes were successfully developed for growth of synthetic grossular on seeds and have yielded good quality fully synthetic crystals up to 3 mm x 5 mm x 9 mm. Incorporation of the rare earth ions Eu, Sm and Yb into the lattice under reducing conditions was achieved, but excitation and fluorescence spectra indicated the presence of only trivalent rare earth ions in the grossular crystals.
- Lasers and Masers