You can usually see fiber optic and CO2 laser markers on the market. They can both cut and engrave and mark. And all these machines have infrared radiation. For an ytterbium laser, this is 1 micrometer y, the so-called near infrared radiation, and for CO2 it is 9.4 or 10.6 micrometers - far infrared radiation. One micrometer is a thousand nanometers.
Green nanosecond lasers give radiation with a different wavelength. And this particular laser marker is three hundred and fifty-five nanometers.
To obtain ultraviolet, a more complex technology is needed, diode pumping is also used there, and with the help of a system of two nonlinear potassium titanyl phosphate crystals, the wavelength from 1064 nanometers is first converted to 532 nanometers, and then to 355. We will not delve into the wilds now.
It is important for us that this technology allows us to obtain a shorter wavelength and a smaller spot diameter, since, by the way, they are directly related to each other. That is, a UV laser with a wavelength of 355 nanometers potentially has a spot diameter thirty times smaller than a CO2 laser.
All this together, in turn, allows you to very effectively process a huge range of both organic and inorganic materials - from wood and glass to metals and plastics. The next advantage of this Green nanosecond lasers is that it is able to work with organic materials such as wood, leather and stone.
