At present, the service life of semiconductor laser marking machine is 20,000 hours, and the service life of fiber laser marking machine is 100,000 hours. Therefore, the price of semiconductor is also much cheaper than that of optical fiber. Because the price is cheap, many manufacturers choose Semiconductor laser marking machine is currently the most common laser marking equipment in the metal industry. With the increasing number of domestic manufacturers of fiber lasers, the technology is becoming more and more mature, and the price of fiber laser marking machines has been declining. In the past few years, semiconductor laser marking opportunities have been replaced by optical fibers, and why there is such a big gap between them.
1, the semiconductor laser has a very small die, high operating current density and optical power density, and the semiconductor single crystal material as a laser material is more prone to defects, which are gradually developed under the action of electricity and light, thereby causing device performance.
2. The mirror surface of the laser of the semiconductor laser marking machine is formed by a cleavage process, and the mirror itself is affected by environmental conditions and contamination may also cause degradation of the laser performance. Die soldering is also a key technology. The die is soldered on the heat sink, and the active distance is only a few micrometers away from the heat sink. The semiconductor laser works hot. If there is too much solder, it will slowly climb when heated, making the semiconductor laser A short circuit occurs, causing the laser to degrade.
3. As the working time increases, the threshold current of the laser will increase slowly, which will cause the laser of the semiconductor laser marking machine to degrade.
In fact, the service life of the semiconductor laser marking machine is not fixed. As long as we pay attention to maintenance, we can extend its service life. In order to make your semiconductor laser marking machine work longer, please pay attention to maintenance.
