Laser filamentation glass cutting

In recent years, ultrafast lasers (or ultrashort pulse lasers) have achieved rapid development, especially in the application of glass cutting.

Filament cutting is a feasible glass cutting process realized by this principle. When the ultrafast laser beam propagates through the glass material, there are both Kerr self-focusing and plasma defocusing, and the beam can achieve dynamic balance between the two. Propagation over long distances, creating micron-scale filament holes in the material that can extend to a depth of several millimeters in glass. The linear motor controls the movement of the glass workpiece relative to the laser beam to generate numerous wire holes with equal spacing, and micro-cracks along the diameter direction are generated by optimizing the wire hole spacing. Applying special effects to the glass with microcracks can increase the stress at the microcracks, so that the glass breaks along the microcracks to achieve the purpose of cutting.

This is the result of laser modification of the glass, and the modified glass has different properties than the original. This processing method also ensures that the processing process will not affect the surrounding materials in the involved space, thus achieving "superfine" processing.

In addition, non-contact processing can also avoid the problems such as chipping and cracks that are prone to occur in traditional cutting, with high precision, no micro-cracks, broken or chip problems, high edge crack resistance, no secondary manufacturing such as flushing, grinding, polishing, etc. Cost and other advantages, reduce costs while greatly improving the workpiece yield and processing efficiency.

Chanxan FPC Picosecond UV Solutions

Chanxan Technology FPC picosecond UV automatic cutting system adopts the new picosecond laser process technology, which has the advantages of high speed, small edge collapse and no taper compared with the original laser scanning process.

The equipment can quickly cut various optical glass and brittle materials. The machine has good beam quality, small focusing spot and small power fluctuation, ensuring stable processing quality.