The difference and application of Gaussian beam and flat-top beam in pulse laser cleaning machine

The difference and application of Gaussian beam and flat-top beam in pulse laser cleaning machine

In pulse laser cleaning machines, Gaussian beam and flat-top beam are two commonly used types of laser beams. Their light intensity distribution characteristics are different, which has an important impact on the cleaning effect. The following is a comparison and application analysis of the two:

1. Gaussian Beam

Features:

50. Light intensity distribution: It has a distribution characteristic of high center and low edge, that is, the light intensity is normally distributed.
50. Focusing characteristics: The energy is concentrated at the center of the beam, which is suitable for high-precision processing and small area processing.
50. Energy attenuation: The energy density at the center of the spot is high, but the energy at the edge decreases rapidly.

Advantages:

50. High-precision cleaning: Suitable for cleaning complex and delicate surfaces, such as carved textures or tiny contaminants on wooden artifacts.
50. Strong controllability: Fine local removal can be achieved by adjusting the focal length and power, and it is not easy to damage the underlying material.

2. Flat-Top Beam

Features:

50. Light intensity distribution: The light intensity distribution on the beam cross section is uniform, that is, the energy density is the same throughout the spot.
50. Energy uniformity: There is no strong light intensity variation within the coverage area.

Advantages:

50. Cleaning uniformity: When cleaning a large surface area, the cleaning effect is consistent within the spot coverage area, and there will be no local over-cleaning or under-cleaning.
50. Gentle treatment: Uniform energy distribution reduces the risk of local overheating and is suitable for heat-sensitive materials such as wood.
50. Suitable for large-area cleaning: For flatter or regular surfaces, such as removing paint or dirt on the wood surface, the effect is better.

Application suggestions

50. Application of Gaussian beam

Metal rust removal: Its high energy density enables it to efficiently remove the rust layer on the metal surface. The higher the laser power, the stronger the rust removal ability and the higher the efficiency.

Weld oxide cleaning: During the welding process, oxides and material precipitation impurities are easily formed in the weld and its surroundings, affecting the welding quality and appearance.

Precision component cleaning: For some precision components, the laser source of the Gaussian beam has the characteristics of strong cleaning ability and low heat output. After cleaning, the material deformation is small and the thermal impact is small, which can effectively avoid damage to precision components.

50. Application of flat-top beam

Mold cleaning: During the use of the mold, residues such as plastic, metal fragments, dust, etc. may accumulate. These residues will affect the surface quality of the product and cause product defects. Flat-top beams can effectively remove pollutants without damaging the mold. It is highly efficient in mold cleaning and does not damage the substrate.

Laser texturing: Using laser to texturize the material surface can significantly improve the adhesion of the material surface. According to different roughness requirements of roughening, multi-mode laser sources with different single pulse energies can be used to achieve different roughness requirements while ensuring roughening efficiency.

Cleaning of heat-sensitive materials: For heat-sensitive materials such as wood and composite materials, the flat-top beam laser source can evenly distribute energy, reduce thermal damage to materials, and effectively clean the paint layer on the surface of the material.

Cultural relics cleaning: It has significant advantages in the field of cultural relics cleaning, especially in protecting the original appearance of cultural relics and avoiding secondary damage. Its high-precision, non-contact cleaning method makes it a key tool for the restoration and protection of cultural relics.

With the continuous upgrading of pulse laser technology, its types and application areas are also expanding. Customers can choose the appropriate equipment according to their actual needs and put it into application. Our laser equipment will also be continuously optimized and upgraded to meet the needs of more customers.