Frequency doubling crystal device and laser

The utility model discloses a frequency doubling crystal device and a laser. The frequency doubling crystal device comprises at least one frequency doubling crystal; the frequency doubling crystal bracket is provided with a mounting position for placing the frequency doubling crystal, and the phase matching angle of the mounting position is matched with the frequency doubling crystal; and the elastic piece wraps the side edge of the frequency doubling crystal and is used for absorbing heat of the frequency doubling crystal. According to the utility model, the thermal expansion and cold contraction characteristics of the elastic member are utilized to synchronously absorb the deformation and displacement of the frequency doubling crystal due to the temperature change, thereby effectively solving the problem that the power of the laser is reduced due to the temperature change of the frequency doubling crystal in the working process, and guaranteeing the quality of the laser product; and meanwhile, the optimal p