19
2021
-
07
Structure of the laser tube
It mainly consists of three parts: hard glass, resonant cavity, and electrodes.
1. Hard glass part; This component is made of GG17 material and consists of a discharge tube, water jacket, gas storage jacket, and return tube. Sealed CO2 lasers usually have a three-layer tube structure. The innermost is the discharge tube, the middle is the water jacket, and the outermost is the gas storage jacket. The return tube is used to connect the discharge tube and the gas storage tube.
2. Resonant cavity part: This component consists of a total reflection mirror and an output reflection mirror. The total reflection mirror of the resonant cavity generally uses optical glass as the substrate, with a gold film on the surface. The reflectivity of the gold film mirror near 10.6um is more than 98%; the output reflection mirror of the resonant cavity generally uses germanium (Ge), an infrared material that can transmit 10.6um radiation, as the substrate, and is coated with a multilayer dielectric film.
3. Electrode part: CO2 lasers generally use a cold cathode, which is cylindrical in shape. The cathode material has a great influence on the life of the laser. The basic requirements for the cathode material are: low sputtering rate, low gas absorption rate, and the main specifications and models of the laser tube are based on laser power as the most important criterion.
Common models are: 15W, 25W, 40W, 60W, 80W. Laser tubes of different powers are mainly distinguished by their different lengths. For example, a 60W laser tube is 1200mm or 1250mm, and an 80W tube is generally 1600mm.
Laser tubes are mainly used in CO2 laser processing equipment, such as laser engraving machines, laser cutting machines, and laser marking machines.
Previous Page
Next Page
Previous Page
Next Page
2021-07-19