Laser Marking Types

Different wavelengths of light produced by a laser marker create different types of marks. Here's how to match the desired type of mark with the appropriate laser marker.

CO2 Laser Marker
10.6 μm wavelength:
Often used to mark paper, plastic, glass and ceramic
Can be used for film marking applications since the wavelength is absorbed by transparent materials
High-powered models can perform gate cutting and PET sheet cutting
YVO4 Laser Marker
1064 nm wavelength:
Often used to mark metals, plastics and ceramics
Ideal for discoloring plastic and producing high-visibility marks
In the past, you had to choose between YAG lasers (for high power) and YVO4 lasers (for detailed processing). The advent of high-powered YVO4 laser markers has allowed them to take over applications once ruled by YAG systems.
YAG Laser Marker
Fiber Laser Marker
1030-2100 nm wavelength:
Often used to mark metals, plastics and ceramics
Print with high power and fast scan speeds
Smallest marking unit size
Green Laser Marker
532 nm wavelength:
(SHG wavelength)
Emit visible green light
Much higher absorption rate than conventional IR lasers, making it possible to limit heat stress while marking
UV Laser Marker
355 nm wavelength:
(THG wavelength)
The shortest commonly available wavelength
UV light has a high absorption rate on nearly every material, which minimizes product damage and enables high-contrast marking.
Light wavelength distribution map