In laser cutting machines, laser generators (such as CO2 lasers, fiber lasers, etc.) generate laser beams through specific physical processes (such as gas discharge, fiber amplification, etc.). Subsequently, the laser beam is guided and focused through a series of optical devices (such as lenses, mirrors, etc.), and finally forms a small diameter, high energy density spot, which is illuminated on the surface of the material to be cut.

Characteristics of laser beam

High intensity: The laser beam can concentrate extremely high energy density. This high energy density allows the laser beam to quickly heat the material to above the melting point or sublimation point when it irradiates the material surface, thereby achieving cutting.

Monochromaticity: The light wave frequency of the laser beam is single, which makes the laser beam less prone to dispersion during propagation and ensures the focusing effect and cutting accuracy of the beam.

Coherence: The light waves of the laser beam are coherent and have a constant phase relationship, which contributes to the focusing and stable transmission of the beam. At the same time, coherence also causes laser beams to exhibit unique physical phenomena when interacting with other substances, such as interference, diffraction, etc.

Good directivity: The divergence angle of the laser beam is extremely small and can almost be regarded as a parallel beam. This good directivity allows the laser beam to be transmitted over long distances without diverging easily, while also ensuring accuracy during the cutting process.