1. Laser power: It directly affects the melting effect and forming efficiency of metal powder.

Ii. Laser wavelength: It determines the interaction efficiency between the laser and the metal powder.

Iii. Spot diameter: It affects the distribution of laser energy and the area of action.

Iv. Energy Density: It refers to the laser energy per unit area, which takes into account factors such as laser power and spot diameter comprehensively.

V. Laser Pulse Width: For pulsed lasers, the pulse width determines the time during which the laser interacts with the metal powder.

Vi. Beam Quality: It mainly includes the divergence Angle of the beam, the uniformity of the light spot, etc.

Vii. Repetition Frequency: It refers to the number of repetitions of the laser pulse within a unit of time.

Viii. Stability: The stability of the laser generation system includes power stability, wavelength stability, etc.