After we know the history of the laser engraving machines, we need to have a good understanding of the development of the laser machines, such as the co2 laser machines with the best engraving machine craftsmanship now. Let us learn about what is a co2 laser machine.
Built up into a beam and directed onto highly polished mirrors
As the light pass through the lasing medium, it causes other excited state electrons to release their energy (stimulated emission) at the same wavelength and direction, thus amplifying the energy within the resonator. The energy will build up into a beam and will overcomes the resistance of the partially reflective mirror and will exit the resonator chamber. The light beam is then directed onto two highly polished mirrors mounted onto very high speed galvo motors. These mirrors are moved to direct the light towards the surface to be coded. Before the light exits the laser, it passes through a lens to concentrate all the energy into a very small spot at a specific distance away from the lens.
This highly focused beam is used to either remove material from the surface (ablation), burn into a material (engraving) or cause a chemical change within the material (photochemical).
The most important consideration is how well the material being coded absorbs the laser beam.
Monport has been focusing on making this technology and creating the co2 laser machines that customers are most satisfied with.