Crystal clear – CO2 and UV laser marking on glass

Glass can be marked reliably using both UV and CO₂ laser systems. Precise control of the energy input enables high-quality marks while minimizing the risk of microcracking in the material.

Both technologies produce durable and highly legible markings through engraving or color change. However, close inspection reveals differences in appearance: UV lasers create exceptionally fine, uniform marks with high detail resolution, while CO₂ lasers typically produce a slightly coarser marking pattern.

The two technologies also differ in marking speed. CO₂ lasers can achieve short processing times in many applications, making them well suited for high-throughput production environments. UV lasers, on the other hand, offer advantages for demanding marking applications that require fine details or particularly low heat input. In both cases, the focal position must be adjusted to the geometry of the workpiece to achieve optimal results.