Three Major Wavelengths Of CO2 Laser Marking Machines

The Reason Why Three Wavelengths Of CO2 Laser Are Produced

The laser wavelength generated by CO2 laser is usually 10.6μm, but in some cases, it can also generate two wavelengths of 9.3μm and 10.2μm. This is due to the different generation mechanisms corresponding to the three wavelengths.

First, the generation of 10.6μm wavelength is caused by the vibration of CO2 molecules. Secondly, the generation of 9.3μm wavelength is caused by the resonant absorption between O2 molecules and CO2 molecules. Finally, the generation of 10.2μm wavelength is caused by the asymmetric stretching vibration of CO2 molecules.

In summary, the CO2 laser generates three wavelengths of laser, which is determined by its device structure and working principle. These lasers with different wavelengths are widely used in medical beauty, sintering, cutting, engraving and other fields.

The working wavelength of CO2 laser is 10.6μm. However, many materials have very good absorption for shorter wavelengths (9μm). Using CO2 laser 9.2/9.4μm wavelength for processing can achieve higher efficiency and reduce thermal impact and damage to surrounding materials. CO2 Laser Marking is achieved by vaporizing materials through photothermal ablation effect. The photothermal ablation efficiency depends largely on the material's absorption of light. Most organic materials absorb 9μm design wavelengths significantly stronger than 10μm wavelengths. For example, polyimide and silicone are widely used in electronics and medical work. Polyimide material is a synthetic polymer that can be used on the surface of copper plates to achieve high temperature resistance and corrosion resistance. It is widely used in the manufacture of flexible circuit boards and circuit boards in electronics. Silicone has very stable thermal properties and is widely used in medical applications, such as angioplasty. According to the absorption spectrum of polyimide, it can be clearly seen that the material has a higher absorption of 9.6μm. Silicone absorbs 9.3μm very well, so when processing these two materials, the processing efficiency is significantly improved by using a 9μm wavelength CO2 laser.

Application of three wavelengths of CO2 laser marking machine

10.6µm wavelength, all-rounder

10.6µm wavelength CO2 laser marking machine is mainly used for various non-metallic materials, such as paper, wood, glass, ceramics, plastic, leather and fabric, etc. Applicable to food packaging, beverage bottles, electronic components, daily chemical products, carton marking and other fields

10.2µm, delicate and precise

10.2µm wavelength CO2 laser marking machine, with its delicate effect and precise marking, is mainly used in the field of film and label printing. It provides efficient marking solutions for industries such as cosmetic cartons and pharmaceutical packaging.

9.3µm: transparent materials

9.3µm wavelength CO2 laser marking machine can provide strong support for product anti-counterfeiting verification and tracking on transparent materials such as PET bottles and transparent bags in the beverage and food packaging industry.

CO2 laser Marking machine, with its unique advantages of three wavelengths, is gradually unlocking unlimited application potential in the field of marking. Whether it is food, cosmetics, medicines, or electronic products and packaging materials, it can provide efficient, environmentally friendly and intelligent marking solutions.