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The working principle of CO2 laser marking machine and semiconductor laser marking machine

by:Leadtech Coding     2021-10-27

Laser is a new light source in the 1960s.

Because the laser has the characteristics of good directionality, high brightness, and good monochromaticity, it is widely used.

Laser processing is one of the most promising areas of laser applications, and more than 20 laser processing technologies have been developed.

The combination of laser technology and many emerging disciplines will be closer to people’s daily lives. Laser products will also be more in-depth in the fields of industrial production, transportation, communications, information processing, medical and health, military, cultural and education Application, and then improve the independent innovation ability of these industries, adapt to the development trend of globalization, and form a new economic growth point.

The following is a brief description of CO2 laser marking machine and semiconductor laser marking machine summarized by laser equipment manufacturers and their respective working principles analysis:

Co2 laser marking The introduction and working principle analysis of the marking machine:

The CO2 laser marking machine uses a laser beam to make permanent marks on the surface of various materials.

The effect of marking is to expose the deep material through the evaporation of the surface material, thereby engraving exquisite patterns, trademarks, dates, LOGO or text. At present, CO2 laser marking machines are mainly used in some requirements with finer and higher precision. Occasions.

Apply to food, medicine, wine, electronic components, integrated circuits (IC), electrical appliances, mobile communications, building materials, PVC pipes and other industries. The main advantage of CO2 laser marking machines and cij printers is that there are no consumables. And permanence.

The principle of CO2 laser marking machine laser processing: CO2 laser marking machine uses infrared light 10.64μm gas laser to charge CO2 gas into the high-pressure discharge tube The light discharge is generated in the gas molecule to release laser light, and the laser energy is amplified to form a laser beam for material processing. The laser beam vaporizes the surface of the processed body to achieve the purpose of engraving.

Briefly describe the working principle analysis of semiconductor laser marking machine

The working principle of semiconductor laser pumped solid-state laser (DPSSL) for laser marking is to use high-power semiconductor quantum well lasers instead of gas lamps to pump solid crystals as gain medium laser resonators to generate lasers of new wavelengths. Crystals are used The backup frequency mixing should produce SHG, THG and other wavelength lasers.

The working principle of semiconductor laser marking machine: semiconductor laser marking machine can be divided into side pumped semiconductor laser marking machine and end pumped laser marking machine , Side pumping means that the light source is installed on the side of the laser rod, while end pumping is the light source installed on the end of the laser rod.

Semiconductor laser marking machine uses the most advanced laser technology in the world, pumping Nd:YAG medium with a wavelength of 808nm semiconductor laser diode, semiconductor laser marking machine The medium produces a large number of inverted particles. Under the action of the Q switch, the semiconductor laser marking machine can form a giant pulse laser output with a wavelength of 1064nm, and the electro-optical conversion efficiency is high.

The laser of the semiconductor laser marking machine is small in size, which is a quarter of the traditional lamp pumped laser.

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