Mar 06, 2020
Since the advent of the laser in 1960, it has greatly changed our lives. Its application involves all aspects of life: laser scanners, laser printers, laser scalpels, laserdiscs, laser communications, and so on.
Application of fiber laser marking machine in industry production
Industrial production requires lasers to be highly reliable, small, quiet, and easy to manipulate. Fiber lasers have attracted people's attention because of their compact layout, high light conversion compliance, short warm-up time, little influence by situation factors, maintenance-free, and easy coupling with optical fibers or light guide systems composed of optical lenses.
Fiber lasers are gradually replacing traditional lasers in leading positions in laser marking, laser welding, and laser cutting. In the field of marking, because of the high beam quality and positioning accuracy of fiber lasers, fiber marking systems are replacing Nd: YAG pulsed laser marking systems that are not subject to high carbon dioxide laser and xenon pumping; in the Taixi and Japanese markets This kind of replacement is being held in a wide range. In Japan alone, the monthly demand exceeds 100 units. As the world's largest industrial manufacturing country, China's demand for fiber laser marking machines is very huge, and it is expected that it will exceed 2,000 units per year. In the field of laser welding and cutting, with the successful development of kilowatts and even tens of thousands of watts of fiber lasers, fiber lasers have also been applied.
Application of fiber laser in sensing
Compared with other light sources, fiber lasers have many advantages when used as sensing light sources. First of all, fiber lasers have high efficiency, tunability, good stability, compact size, lightweight, easy maintenance, and good beam quality. Secondly, the fiber laser can be well coupled with the fiber, and is fully compatible with the existing fiber devices, and can perform all-fiber testing.
Nowadays, fiber sensing based on tunable narrow line-width fiber lasers is one of the popular applications in this field. This example fiber laser has a very narrow spectral linewidth, and ultra-long stem length, and fast modulation of the frequency. Applying this narrow-line-width fiber laser to a diffuse sensing system can achieve ultra-long interval and ultra-high-precision fiber sensing.
Application of fiber laser in communication
Compared with conventional laser systems, fiber lasers have obvious advantages in terms of compact layout, heat dissipation, beam quality, volume, and compatibility with existing systems, and have been widely used in the field of communications.
A mode-locked fiber laser with a rare-earth-doped fiber as a gain medium can breed ultra-short optical pulses with high repetition rates and pulse widths of the order of picoseconds or femtoseconds, and its lasing wavelength falls within the optimal window of fiber communication 1.55 μm In the band, it is the aspiring light source of the future high-speed optical communication system. Now, mode-locked fiber lasers with repetition rates of 10 GHz and 40 GHz have been successfully developed. Once this communication network is deployed, the demand for this model laser will be huge.
Application of fiber laser in therapy
Today, most of the lasers used in clinical practice are argon-ion lasers, carbon dioxide lasers, and YAG lasers, but usually, their beam quality is not high, they have a very large volume, a huge water cooling system is necessary, and they are very poor to install and maintain. Fiber lasers can be added. Because water molecules have an absorption peak at 2 μm, using a 2 μm fiber laser as a surgical thing can achieve rapid hemostasis and eliminate the smashing of human structures by surgery.