Reasons for the rapid development of fiber lasers

The reasons for the rapid development of fiber laser cutting machine-fiber laser can be summarized as follows:

1. In-depth scientific research can increase the thermal load of the fiber without any thermal attenuation or light-induced absorption effect. And stimulated Raman scattering, which were often regarded as the limiting factors of fiber lasers before. Now this is no longer a problem.

2. As a pump source, single-emitter pump diodes have a more reliable advantage than using semiconductor diode bars and semiconductor diode stacks. The life of the pump diode is usually greater than 100,000 hours, and the device does not need to be replaced during the lifetime of the entire laser mechanics system. High-intensity aging test further improves reliability.

3. Increase the diode pump power and improve the pump efficiency to bring higher average power.

4. Due to its nature, the fiber is largely self-cooling, which reduces the thermal lens effect and simplifies the laser design. These benign thermal factors mean that the cooling requirements are not as demanding as other laser designs pumped by semiconductor diode bars and semiconductor diode stacks.

5. A variety of fiber diameters can be selected and plug-and-play fibers can obtain various types of spatial energy distribution: small single-mode Gaussian fibers are used for cutting and drilling. Multimode fibers with larger diameters are used for welding or surface treatment. A continuous wave single-mode fiber laser equipped with a fiber with a diameter of, for example, 50 microns, can easily change from a cutting laser to a welding laser. All that is needed is to simply replace the focusing optics of the terminal.

6. A higher power fiber optic adapter has been obtained. Some fiber laser power beam switches developed for fiber-to-fiber connection can reach multiple channels, the switching time is very short, and it can provide a visible red alignment beam for each channel.

7. Higher-speed electronic components, advanced interfaces, control and network software have been developed.