Neodymium-doped gadolinium vanadium acid crystals (Nd: GdVO4) and neodymium-doped yttrium vanadate single crystal (Nd: YVO4) excellent laser crystal of a similar nature, it has excellent optical, mechanical and physical properties, is the ideal PuQuan laser diode pump solid state (DPSS) one of microminiature laser laser work material. It than a Nd: YAG has higher slope efficiency, than the yttrium vanadate has better thermal conductivity and high output power, so in the high power DPSS occasions, using Nd: GdVO4 effect is better than using Nd: YAG and Nd: YVO4.