Yttrium aluminium garnet(YAG)single crystals and ceramics with different Ce~(3+)-doping concentrations(mole fraction)are prepared.The luminous flux,photoelectric conversion efficiency,color rendering index,and color temperature of Ce:YAG single crystals and ceramics under laser excitation are also analyzed.Under the excitation of the laser with a current of 2.6 A,the luminous flux of ceramics with a Ce~(3+)-doping concentration of0.3% is the highest at 617.2 lm.The single crystals with a Ce~(3+)-doping conc...