Semiconductor laser technology is widely used, in the current mainstream of four laser technology, in addition to CO2 laser does not use semiconductor laser, solid laser, fiber laser must use semiconductor laser as a pump source, the basis is based on high power semiconductor laser technology. As the core technology, semiconductor laser pointer is widely used in industrial processing, additive manufacturing, medical cosmetology, photodynamic therapy, laser display, infrared monitoring, lidar ranging, high-energy weapons and other fields.
At present, semiconductor lasers are developing in the direction of high power, high brightness, high efficiency, high reliability and low cost. “There are several key technologies that need to be mastered to achieve high power and high efficiency output of semiconductor lasers. Among these key technologies, structural design is the basis of high power semiconductor laser devices, and the development of high power semiconductor laser is closely related to the design of epitaxial chip structure. MOCVD epitaxial material growth is the core and key technology of semiconductor laser. The quality of epitaxial crystal material will directly affect the performance of photoelectric parameters such as internal loss, threshold current density, quantum efficiency and working voltage of the laser. Cooling and packaging of laser chips are important links in manufacturing high-power semiconductor lasers, and integrated packaging combined with fiber coupling technology is the main way to obtain kilowatt and 10,000-watt laser.
In the semiconductor laser industry at home and abroad, zhu zhen said: “device packaging technology requirements are relatively low, the domestic industry base is good, rapid development. Chip preparation is the key to LD, and the technical requirements are high. Extension is the core of the whole industry, with high technical difficulty and relatively weak domestic foundation.
Finally, zhu zhen introduces some domestic production and research units devoted to semiconductor laser technology, as well as the technical direction and products of huaguang optoelectronics.