Ce3+:YAG is of the most applicable crystals used as white luminescent phosphor diodes and scintillators in detectors. The Ce3+ ion has strong absorption peaks in UV-visible and also strong fluorescence peaks in yellow region. There will be a huge increase in gain at 1064nm laser output wavelength if it has Nd as co-dopant in YAG crystal structure. This crystal has high thermal radiation conduction and good mechanical and thermal properties.