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Home » News » Blog » The Principle and Five Categories of CO2 laser tube including of sealed 80W 100W 130W 150W CO2 glass laser tube

The Principle and Five Categories of CO2 laser tube including of sealed 80W 100W 130W 150W CO2 glass laser tube

Views:0     Author:Site Editor     Publish Time: 2018-12-28      Origin:Site

CO2 laser tube including of sealed 80W 100W 130W 150W CO2 glass laser tube was first used with a wavelength of 10.6μm in 1964. Because this is a very efficient laser, its conversion efficiency is up to 10 % as a commercial model, so CO2 laser tube including of sealed 80W 100W 130W 150W CO2 glass laser tube is widely used in laser cutting, welding, drilling and surface treatment. As a commercial application, the laser can reach 45 kilowatts, which is currently the strongest material processing laser.

 

1. Operation principle

CO2 laser tube including of sealed 80W 100W 130W 150W CO2 glass laser tube is a molecular laser. The main substance is carbon dioxide molecules. It can represent a variety of energy States, depending on the form of vibration and rotation. The mixed gas in carbon dioxide is a plasma formed by low-pressure gas ( usually 30 - 50 torr ) due to electron release. As Maxwell - Boltzmann's law of distribution said, in plasma, molecules exhibit various excited States. Some will exhibit high energy States ( 00o1 ), which exhibit asymmetric oscillation States. When colliding with a hollow wall or emitting naturally, such molecules also occasionally lose energy. By naturally emitting this high-energy state, it will drop to a symmetrical swing configuration ( 10o0 ) and emit photons that may propagate to any direction ( a beam with a wavelength of 10.6μm ). Incidentally, one of these photons will travel down the cavity of the optical axis and will also swing in the resonance mirror.

 

The Generation Principle of CO2 laser tube including of sealed 80W 100W 130W 150W CO2 glass laser tube and Its Main Five Categories

 

In general, the working substance of CO2 laser tube including of sealed 80W 100W 130W 150W CO2 glass laser tube is a mixture of carbon dioxide, helium and nitrogen. Nitrogen gas acts as a buffer gas and its molecules resonantly transmit stimulation energy to carbon dioxide molecules. Because relaxation level is the bottleneck, helium's role is to transfer energy to helium atoms as a heat sink.

 

 

2. Types of CO2 laser tube including of sealed 80W 100W 130W 150W CO2 glass laser tube

The way of rejection of waste heat has a great influence on the design of laser system. In principle, there are two possible ways. The first method is based on the automatic processing of naturally diffused hot gas to the pipe wall. The operation principle is sealing and slow axial laser. The second is based on forced convection of gas. Its operation principle is fast axial laser.

 

In general, there are mainly five kinds of CO2 laser tube including of sealed 80W 100W 130W 150W CO2 glass laser tube

Sealed or no flow

Slow axial flow

Fast axial flow

Fast lateral flow

Lateral excitation atmosphere ( TEA )

Seal or streamless CO2 laser tube including of sealed 80W 100W 130W 150W CO2 glass laser tube are typically mar by lasers used for beam deflection. Its discharge tube is completely sealed. The quality of this laser beam is very good. Moreover, in most cases, the entire discharge tube can be replaced with new and old ones and can be refilled with gas so that it is easy to maintain. This eliminates the need for a separate gas supply system. Only a few connections need to be made to the laser head. So it is compact and lightweight. But its energy output is low ( usually less than 200 watts ).

 

  TEA CO2 laser tube including of sealed 80W 100W 130W 150W CO2 glass laser tube is usually used to make protective covers. It can only be operated in pulse situation. Air flow is low and air pressure is high. The excitation voltage is about 10,000 volts. The energy distribution of this laser beam is uniform over a relatively large area. Its maximum energy can reach 1012 watts and its pulse width is very small. However, due to the multi-state operation, it is difficult for this type of laser to focus on a small spot.

 

3, pump power supply

As for CW CO2 laser tube including of sealed 80W 100W 130W 150W CO2 glass laser tube, there are mainly three ways to supply power to the pump. For example, direct current ( DC ), high frequency ( HF ) and radio frequency ( RF ). DC power supply design is the simplest. In the high frequency power supply mode, electrons alternate between frequencies of 20 - 50 kHz. Compared with direct current, high frequency power supply is compact in size and high in efficiency. In RF power supply, electrons alternate between frequency 2 and 100 MHz. Compared with direct current, its voltage and efficiency are lower.

 


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