GW Laser Tech 976nm 12kW High-power Laser Saves More Than $10,000 A Year in Electricity

GW Laser Tech has been committed to researching 976nm technology since its inception, and has made technological breakthroughs and optimizations in the following aspects.

As mentioned above, with the gradual increase of fiber laser power, heat control becomes particularly important. Taking effective measures to dynamically control the internal heat of the laser and suppress the generation of thermal effects has become a key factor for the stable operation of the 976nm pump laser.

The heating of the fiber laser mainly comes from the two parts of the pump source and the ytterbium-doped fiber. GW Laser Tech creatively uses the front and back sides of the water-cooling plate to separate the pump source and the ytterbium-doped fiber on both sides. All the hot spots of the laser that need heat dissipation are water-cooled and dissipated, which overcomes the traditional water-cooled compact structure and overall heat dissipation. At the same time, several fans are installed on the water cooling surface, and the combination of water cooling and air cooling can speed up the balance of internal temperature and humidity, speed up the heat dissipation of the system, and reduce local hot spots.

Fiber lasers use fusion splicing to realize the connection of fiber components. In order for the laser to achieve higher power targets, high-quality fiber splicing is very important. Loss at the splice site results in reduced efficiency, degraded beam quality, and damage to the pump, fiber, and fiber components. GW Laser Tech adopts the unique thermal management technology of fusion splices to overcome the technical difficulties of fusion splices, and has applied for related patents.

Fiber lasers are usually processed industrially in a high temperature, high humidity and dusty environment. The gain fiber and key welding points are easily aged in this environment for a long time, which affects the beam quality and output efficiency. The 976nm bidirectional pumped fiber spool structure independently developed by Guanghui Laser uses a sealing ring and a cover plate to seal the internal fiber and welding points in the spool. Heat dissipation, on the other hand, has a certain degree of isolation from the external environmental temperature and humidity, which can reduce the occurrence of condensation and prevent dust from entering to improve the stability of the laser. At the same time, different coil radii can effectively filter out different specific high-order modes, and the output spot quality will be closer to single mode.

In addition, the light energy density of the 976nm wavelength is high, so the returned light and residual light have a high probability of damaging the internal key components, so their processing is also crucial. The ABR anti-high-reflection technology of Guanghui Laser has independent intellectual property rights. By designing residual and returning light stripping devices at key positions inside the laser, it technically solves the problem of device damage and ensures the stable operation of high-power lasers.

Taking the 12kW high-power laser of GW Laser Tech's 976nm technology as an example, compared with other 915nm pump lasers of the same power from other competitors, under the same use environment, it can save more than 10,000 US dollars a year. Today, the price of high-power lasers is constantly dropping, and the competitive advantage is extremely obvious.