Comparison of advantages and disadvantages between fiber laser and ultraviolet laser

The wavelength of fiber lasers is different from that of ultraviolet lasers. The wavelength of pulsed fiber lasers is about 1064nm, while the wavelength of ultraviolet lasers is about 355nm, and some special ones are at 266nm.

From the wavelength point of view, there is a significant difference between the two, which is also the way to distinguish the two lasers from the name. The pulsed fiber laser is made of fiber doped with rare earth elements as the gain medium.

Under the irradiation of the pump light source, it is produced by excited oscillation. Its optical path is similar to that of the ultraviolet semiconductor laser. It is irradiated from the end surface by the semiconductor pump light source, but the medium of the two is different.

Pulsed fiber lasers are mainly used for laser processing of metal materials. They have the characteristics of high energy density and fast absorption power. Basically, all metals can be processed by laser, including superhard alloys such as tungsten alloys.

Some plastics such as ABS, PE, PVC and other materials can also have good processing effects, but the disadvantage of pulsed fiber lasers is that the thermal effect of the laser is more obvious. For some special non-metallic products, laser processing is easy due to excessive temperature. High and broken.

The ultraviolet laser can just make up for the deficiency of the fiber laser. Pulse fiber laser is the main configuration of laser marking machine. At present, the technology is becoming more and more mature, and the quality and reliability are getting better and better. It has been widely used in various industries and has become a relatively common equipment.

The main advantage of UV laser is that it is processed by cold light source, and the thermal effect is lower than that of fiber laser.

For non-metal products, processing has unique advantages, especially products such as PE, PVC, glass, plastic light-transmitting buttons, plastic bags, etc. have good processing results.

Ultraviolet lasers are currently the core components of ultraviolet laser marking machines, and they are widely used, but the biggest disadvantage and shortcoming is the high price.

At present, ultraviolet lasers are mainly used in high-end manufacturing fields, such as laser precision cutting and high-precision laser marking machines

With the gradual localization of the core accessories of external lasers and the price reduction of internal optical devices such as frequency doubling chips, the price of UV laser marking machines will be as popular as fiber laser marking machines in the future.