It is mainly composed of three parts: hard glass, resonant cavity and electrode.
1. Hard glass part; this part is composed of GG17 material fired into discharge tube, water cooling jacket, gas storage jacket and return gas pipe. Sealed-off CO2 lasers usually have a three-layer casing structure. The innermost is the discharge tube, the middle is the water net jacket, the outermost layer is the gas storage jacket, and the return gas pipe is used to connect the discharge tube and the gas storage tube.
2. Resonator part: This part consists of a total reflection mirror and an output mirror. The total reflection mirror of the resonator is generally based on optical glass, and the surface is coated with gold film. The reflectivity of the gold film mirror near 10.6um is more than 98%; the output mirror of the resonator is generally made of germanium, an infrared material that can transmit 10.6um radiation. (Ge) is the substrate, and it is made by plating a multi-layer dielectric film on it.
3. Electrode part: CO2 lasers generally use cold cathodes, which are cylindrical in shape. The selection of cathode materials has a great influence on the life of the laser. The basic requirements for cathode materials are: low sputtering rate, low gas absorption rate,
The main specifications and models of the laser tube are based on the laser power as the most important basis. Common models are: 15W, 25W, 40W, 60W, 80W.
Laser tubes of different powers are mainly distinguished by different lengths. For example, the 60W laser tube is 1200mm or 1250mm, and the 80W length is generally 1600mm.
Laser tubes are mainly used in CO2 laser processing equipment. Such as laser engraving machine, laser cutting machine, laser marking machine, etc.
CO₂ laser tube
After more than ten years of development, the Tottenham W series laser CO₂ laser tube has achieved three qualitative leaps. In the first generation, the metal end with the lens was directly glued to the glass tube mouth, and the light-emitting lens was cooled with water; in the second generation, adjustable screws were added to the two metal ends of the laser tube, so as to improve the installation accuracy of the laser tube, and the product The pass rate and output mode have been improved by one level; the third-generation laser tube has eliminated the adjustment screws at both ends, and adopted the process of direct sintering of the metal end and glass, which ensures the extremely high stability of the metal end structure, and the mode will not occur any Variety.
Features
01 Beam quality over 95% of TEM00 mode
02 The advantages of optical resonators improve product power
03 The world's most advanced nuclear radioactive material coated lenses
04 Direct sintering process of laser tube metal head and glass
Applications
01 Cutting, marking and engraving of non-metallic materials
