Journal of the American Ceramic Society, Vol.96, No.11, 3569-3575, 2013
Spectral Properties of Pr3+-Doped Transparent-Glass-Ceramic Containing Ca-5(PO4)(3)F Nanocrystals
A Pr3+-doped transparent oxyfluoride glass-ceramic containing Ca-5(PO4)(3)F nanocrystals was prepared by melt quenching and subsequent thermal treatment. The crystallization phase and morphology of the Ca-5(PO4)(3)F nanocrystals were investigated by X-ray diffraction and transmission electron microscope, respectively. The volume fraction of the Ca-5(PO4)(3)F nanocrystals in the glass-ceramic is about 10% and the fraction of Pr3+ ions incorporated into the Ca-5(PO4)(3)F nanocrystals is about 22%. The peak absorption cross sections at 435 and 574nm increase up to 128% and 132% after crystallization, respectively. The peak stimulated emission cross sections of the (P0H4)-P-3-H-3 blue laser channel and (P0F2)-P-3-F-3 red laser channel for the glass-ceramic are 4.95x10(-20) and 29.8x10(-20)cm(2), respectively. The spectral properties indicate that the glass-ceramic is a potential visible laser material.