UV laser VS CO2 laser engraving on glass

Project Settings

Machine Used: 5w UV laser VS 40w CO2 laser
Software: Lightburn
Project File: Download here


CO2 laser engraving on glass

The principle of marking on glass mainly relies on the thermal effect of the CO2 laser. When the CO2 laser irradiates the surface of the glass, the surface of the glass absorbs the laser energy and heats up rapidly, causing the material on the surface of the glass to melt or evaporate, forming tiny pits, and thus forming the required marking pattern.


set the CO2 setteings for engraving glass, we use 600 speed, 50 frequency, 40% power.


UV laser engraving on glass


set the UV setteings for engraving glass, we use 12 speed, 20 frequency, 25% power, 50 Q-Pulse Width.

Laser Marking effects

  • UV laser (the right glass): UV laser marking on glass generally exhibits clear, high contrast marks. It can create small craters or bulges on the glass surface with high precision and detail.
  • CO2 laser (the left glass): CO2 laser marking on glass typically leaves shallow, grayish-white engraving marks. The marking effect is usually rougher and less defined compared to UV laser marking. It is worth noting that the CO2 laser proves to be faster.

In summary, UV laser is suitable for achieving high precision, high contrast, and clear marking on glass. CO2 laser, on the other hand, is more suitable for simpler marking requirements without demanding high levels of detail. The choice of laser marking technology depends on specific requirements and desired marking effects.

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