UV laser engraving machine use a highly absorbent wavelength (355 nm) to label objects. Due to their high absorption rate, UV lasers may “cold mark” materials without adding additional heat stress, especially those with high reflectivities like gold, silver, and copper. This lessens soot and burrs brought on by standard marking and processing.
Characteristics of UV lasers
- The wavelength of a nonlinear crystal
It decreased to 532 nm by running a laser with a standard wavelength of 1064 nm across it. Another crystal is used to pass this light further through, effectively lowering its wavelength to 355 nm. As a result, third-harmonic generation (THG) lasers are a common name for UV lasers.
- UV laser light has a noticeably higher rate of material absorption
Compared to normal laser light (1064 nm) and green laser light (532 nm). Therefore, increasing the strength is not necessary to produce highly noticeable marks. Due to UV light’s high absorption rate, UV lasers may mark highly shiny materials like gold, silver, and copper with minor heat damage. As a result, soot and burrs are reduced, surface damage is avoided, and corrosion-resistant marking is made possible.
- the size and the thickness of sealing resins
use in electronic components is decreasing. The internal parts of most laser markers run the risk of being harmed by energy transmission through sealing resins. But UV laser markers may label sealing resins without harming the inside parts because of their extraordinarily high material absorption rate.
The UV laser machine can engrave various materials, from metals to paper, and is a practical alternative for marking plastics and glass, making it a more practical solution than other products.