Breaking Foreign Monopoly: Breakthrough in China's High-power Fiber Lasers
According to the information provided by the National Defense Information Technology, China has independently developed a high-power pump coupler, which also means that China is at the world's leading level in the manufacture and R&D of fiber lasers.
The high-power pump coupler, one of the core components in fiber lasers, has always been imported, and the main function of the pump coupler is to couple the pump light in multiple fine fibers to a coarse fiber. The output of higher-powered pump light works like the roots of a tree: Many lateral roots transport moisture from the soil and collect it in the main root and then inject it into the trunk. The stronger the water absorption and delivery capacity of the main and lateral roots, the more trees can obtain. The more moisture, the more flourishing.
In order to get rid of dependence on imported core devices, China Electronics Corporation proposed the goal of fully realizing the localization of core devices in "high-power fiber lasers." In the end, we have realized cores such as beam combiners and pump couplers in just half a year. The localization of components.
It is reported that domestic pumping coupler pumping light of independent research and development power exceeds 1200W, coupling efficiency up to 97%, reaching the international advanced level.
Science knowledge: What is Fiber Laser?
Refers to a rare-earth-doped glass fiber as a gain medium for lasers. Fiber lasers can be developed on the basis of fiber amplifiers: under the action of pump light, high power density is easily formed in the fiber, resulting in a laser energy level of the laser working substance. The number of particles is reversed. When a positive feedback loop (constitutes a resonant cavity) is added properly, a laser oscillation output can be formed.
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