As one of the core components of laser equipment, laser tube plays a very important role in laser equipment.Laser tube full name: glass sealed off CO2 laser.Because this laser is made of glass tube, it is commonly known as laser tube.
Its structure is mainly composed of hard glass, resonant cavity and electrode.
1）.Hard glass part;This part is composed of a discharge tube, a water cooling sleeve, a gas storage sleeve and a muffler made of GG17.The sealed off CO2 laser usually has a three-layer casing structure.The most inside is the discharge tube, the middle is the water net sleeve, the outermost layer is the gas storage sleeve, the muffler is used to connect the discharge tube and the air storage tube.
2）.Resonator part: this part is composed of a full mirror and an output mirror.In general, the total mirror of the resonant cavity is based on optical glass and has a gold-plated film on its surface. The reflectance of the gold-film mirror near 10.6um is more than 98%.The output reflector of the resonator is generally made of germanium (Ge), an infrared material capable of transmitting 10.6um radiation, and coated with a multi-layer dielectric film.
3）.Electrode part: CO2 laser generally adopts cold cathode, which is cylindrical in shape. The selection of cathode material has a great impact on the life of the laser. The basic requirements for cathode material are: low sputtering rate and low gas absorption rate.
The main specifications of the laser tube take the laser power as the most important basis.Common models are: 15W,25W,40W,60W,80W.
Laser tubes of different power are mainly divided into different lengths.If the 60W laser tube is 1200mm or 1250mm, the length of 80W is generally 1600mm.
Laser tube is mainly used in CO2 laser processing equipment.Such as laser engraving machine, laser cutting machine, laser marking machine.
1）.Life: because the laser tube as the laser engraving machine consumables, therefore, life has become the most important purchase index.The difference of life span is mainly due to the processing technology, and the design technology is the main factor.Generally, the working life of domestic laser tube is about 1500 hours (60W for example).
2）.Laser energy: different performance of the laser tube, the maximum light intensity is different.
3）.Spot quality: the performance is determined by the laser tube mode.The quality of the spot is determined by the production process.The quality of the spot directly affects the performance of the user.
4）.Stability: poor performance of the product, the stability of the prone to air leakage, non - external burst and other problems.
High pressure discharge excites high concentration of CO2 gas to produce a laser with a wavelength of 10.6um.
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