The Requirement of Beam Stability
Dense and uniform laser remelting microstructure and lower porosity can reduce the oxidation rate of the adhesive layer and prevent the penetration of corrosive medium. A high-power laser can be used to directly radiate ceramic or metal powder, melt it and form metallurgical bonding on the metal surface to obtain columnar crystal structure perpendicular to the surface. Because the order of solidification of the cladding layer is relatively small from the surface to the inside, so the structure is conducive to mitigate the thermal stress. Can also be placed in a uniform matrix mixed powder, mixed powder by high power blue laser radiation, the formation of molten pool by adjusting the laser power, spot size and scanning speed of the powder melting is good, and on this basis further by changing the composition into the molten pool constantly adding alloy powder, repeating the above process can obtain the gradient coating.
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In the current electronic age, once the development and application of graphene is developed, it will undoubtedly change the current electronic device industry. Graphene technology is still in the initial stage of exploration and application. On the one hand, graphene technology is constantly applied to the industry, and the existing graphene technology is constantly upgrading. In recent years, the concept of graphene has been widely sought after. The development and application of graphene in China is constantly decreasing. The technology upgrading of graphene has become an urgent problem to solve in this field.
Compared with other types of laser pointer, fiber laser has the advantages of higher efficiency, longer service life, less maintenance, lower cost and so on. The cutting head of a laser cutting machine is a red laser pointer output device, which is composed of a nozzle, a focusing lens and a focusing and tracking system. The cutting head of laser cutting machine will walk according to the set cutting path, but the height of laser cutting head needs adjusting control under different material, thickness and cutting mode.
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Under free running condition, the output power of green DPSS laser has relatively large change in operation. This large variation performance 532nm green DPSS laser system is not able to fulfill the requirement of beam stability of different users. According to active measures, the beam stability always gets extremely high improvement. Within 4 hours continuous beam projection, beam stability of green laser system gets superior performance of as high as ±0.5％. According to advanced photoelectric feedback method of making direct control of LD driving current, green laser beam stability can seriously be improved, thus allowing easy and convenient operation in all work fields.
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With advances in compound semiconductor technology, industrial applied high power diode laser system will get great developments on its high output power and better laser beam quality, thus making greater expansion of its industrial application work fields. In high-power fiber laser pumping source aspect, fiber coupled green laser light system power increases constantly, fiber core diameter and a numerical aperture continue to decrease, resulting in constant improvement of laser light brightness of fiber lasers. Although users can get even higher power and reduced dimension diode lasers, however, its production cost is becoming lower.