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LASER MARKING : GREEN VS. UV LASER MARKING
http://www.unilasertec.com 2020-8-13 12:44:01 1

A “COLD” LASER MARKING SOLUTION: GREEN LASER MARKING VS. UV LASER MARKING

The word LASER is actually an acronym for Light Amplification by the Stimulated Emission of Radiation. This LASER is a special light with concentrated and directed transmission.

The laser energy that is released and measured in wavelengths nanometers (nm). The longer the wavelength, the more powerful the laser beam.
For example, a UV laser , which has a wavelength of around 355nm, offers a lower power for marking heat-sensitive materials such as plastic and glass. Because UV laser so called as "cold laser" category emit less energy, they are great solutions for many organic or soft materials, as the shorter wavelength are less to burn the material. A fiber laser, operates at wavelength 1064nm, delivering significantly higher power to mark harder materials, such as metal.

Compared to other non-permanent marking processes such as printing or labeling, laser marking machine without consumables and less maintenance.

If you’re considering an alternative to CO2 or Fiber laser marking technologies, you’ve probably researching on UV laser marking machines and green marking lasers. These technologies are similar in that they are both used for marking soft products. But there are also some important differences, UV lasers are often used for highly intricate patterns, precise marks on the micro level. The UV wavelengths allow for a high beam intensity and miniscule spot size.
Both green and UV lasers emit less energy than CO2 or Fiber lasers. However, when your CO2 or Fiber laser is not marking effectively, in our experience, a green laser is the your choice.
A clean, readable marks on soft products requires less heating power burn on materials. Typical fiber laser with a wavelength 1064 nm. Green lasers operate at half that wavelength 532 nm. Most UV lasers emit even less power, about 355 nm or one-third that of fiber lasers.


As a conclusion, a green laser gives you more power than a UV laser is still delicate enough to mark a wide variety of soft products. You get a high quality mark without significantly decreasing your marking speed.