Although domestic enterprises have made great progress in laser devices, there is still a big gap in some key devices and product quality. It is reported that pumping source packaging, pumping coupler, laser beam, special optical fiber, laser transmission components have been produced in China. The domestic laser devices are gradually getting rid of the dependence of foreign enterprises. In order to achieve this, in 2021, domestic laser enterprises began the second round of power, gradually improved the layout of the whole industrial chain and improved product quality and performance.
After experiencing high power CO2 laser and high power solid YAG laser, laser material processing laser is developing towards semiconductor laser and fiber laser. Laser, as the core component of laser processing system equipment, can be divided into gas laser, solid laser, fiber laser and so on, according to the different types of laser working substances. Current market preferred fiber laser is to use glass fiber mixed rare earth elements as laser gain medium. When passing through the optical fiber many times, high power and high intensity light source can be formed under the action of the pump light source, and form laser level "population inversion" due to the laser working substances. When the positive feedback loop be appropriately added, laser oscillation output can be formed, which has characters of high electro-optical conversion efficiency, high reliability, simple structure, etc.
In recent years, benefiting from the demand of power battery, OLED, automobile, sheet metal, PCB and other processing equipment, the overall market size of domestic laser processing equipment has shown an upward trend. The vigorous development of laser industry has also greatly driven the growth of laser devices.
The isolator only allows light to pass in one direction and blocks it in the other. In fiber lasers, because the laser is very sensitive to the reflected light from connectors, filters, etc., isolators are usually used in the optical path to avoid the interference and damage to the light source, pump source and other light-emitting devices caused by the echo in the optical path. The optical isolator is characterized by high isolation degree and low insertion loss, high reliability and high stability, very low polarization dependent loss and polarization mode dispersion.
Wavelength Division Multiplexer (WDM) is a technology that combines the optical signals of different wavelengths at the sending end through the multiplexer and is coupled to the same optical fiber of the optical circuit for transmission. At the receiving end, the optical signals of different wavelengths are separated by a demultiplexer, and then further processed by the optical receiver to recover the original signal. In the same optical fiber, two or more optical wavelength signals simultaneously transmit information through different optical channels, which is called optical wavelength division multiplexing technology. Wavelength Division Multiplexing (WDM) can increase optical fiber transmission capacity, signal transmission is transparent, and capacity expansion is simple and low cost.
For example, the traditional consumer electronics industry, although the growth of the traditional consumer electronics industry is slowing down, but the stock market space is still very large. Among them, personal computers, tablets, smart phones and other commonly used electronic products have begun to enter the Red Sea competition pattern. In the following, the competition will focus at the technological innovation and breakthrough of products, thus bringing new technology application and process change, which will make a huge demand of electronic laser precision processing equipment, thus driving the laser device market.
