Depending on the laser generator，Currently, laser cutting machines on the market can be roughly divided into three types：Fiber laser cutting machine，CO2 laser cutting machine，Three types of YAG (solid state) laser cutting machines。The following is a brief introduction to the characteristics of three laser cutting machines：
The first type：Fiber laser cutting machine
Fiber laser cutting machine because it can be transmitted through fiber，The degree of flexibility has been unprecedentedly improved，Few fault points，Easy to maintain，Very fast，Therefore, when cutting thin plates within 4mm, fiber cutting machines have great advantages，However, due to the influence of solid laser wavelength, it has poor quality when cutting thick plates。The wavelength of fiber laser laser cutting machine is 1.06um，Not easily absorbed by non-metals，Therefore, non-metallic materials cannot be cut。The photoelectric conversion rate of fiber laser is as high as more than 25%，In electricity consumption、The advantages of fiber laser in supporting cooling systems are quite obvious。According to international safety standards，Laser hazard level is divided into 4 levels，Fiber laser has a short wavelength that can cause great damage to the human body because of its eyes.，The most harmful level，For safety reasons，Fiber laser processing requires a fully enclosed environment。Fiber laser cutting machine as an emerging laser technology，The popularity is far less than that of CO2 laser cutting machines。
The second type：CO2 laser cutting machine
CO2 laser cutting machine，Can stably cut carbon steel within 20mm，10Stainless steel within mm，8Aluminum alloy below mm。The wavelength of CO2 laser is 10.6um，More easily absorbed by non-metals，Can cut wood in high quality、Acrylic、PP、Non-metallic materials such as plexiglass，However, the photoelectric conversion rate of CO2 laser is only about 10%.。CO2 laser cutting machine is equipped with sprayed oxygen at the beam outlet、Nozzle of compressed air or inert gas N2，Flat and smooth for cutting speed and cutout。In order to improve the stability and life of the power supply，For CO2 gas lasers, we must solve the discharge stability of high-power lasers。According to international safety standards，Laser hazard level is divided into 4 levels，CO2 laser belongs to the least harmful level。
The third type：YAG (Solid) Laser Cutting Machine
YAG solid-state laser cutting machine has low price、Features of good stability，But the energy efficiency is generally low<3%，Currently, the output power of the product is mostly below 600W，Due to the small output energy，Mainly used for hole punching, spot welding and cutting of thin plates。Its green laser beam can be applied in pulse or continuous wave situations，Have short wavelength、Good light concentration is suitable for precision processing, especially hole processing under pulse, which is most effective.，Can also be used for cutting、Welding and lithography, etc.。The wavelength of the YAG solid-state laser cutting machine laser is not easily absorbed by non-metals，Therefore, non-metallic materials cannot be cut，What YAG solid-state laser cutting machine needs to solve is to improve the stability and life of the power supply.，It is necessary to develop large capacity、Long-life optical pump excitation light source，If a semiconductor optical pump is used, the energy efficiency can be greatly increased。