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Difference of fiber and UV laser marking machine

Ultraviolet laser marking machine belongs to the series of laser marking machines, but it is developed and manufactured by using a 355nm ultraviolet laser. Compared with infrared lasers, 355 ultraviolet light has a very small focused spot, which can greatly reduce the mechanical deformation of materials. And the processing heat impact is small because it is mainly used for ultra-fine marking and engraving, it is especially suitable for food and medical packaging materials marking, micro-hole drilling, high-speed division of glass materials, and complex pattern cutting of silicon wafers, etc. Application areas.

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Fiber laser has become a hot topic in laser physics research in recent years, and it is unanimously considered as a new generation product that may completely replace solid-state lasers. Fiber lasers refer to lasers that use rare-earth-doped glass fibers as gain media. Fiber lasers can be developed on the basis of fiber amplifiers: high power density is easily formed in the fiber under the action of pump light, resulting in laser working material. The energy level "number inversion" can form a laser oscillation output when a positive feedback loop (to form a resonant cavity) is properly added. A fiber 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, or to "carve" traces through the chemical and physical changes of the surface material caused by light energy, or to burn off part of the material through light energy to show the required etching Patterns, texts, barcodes, and other graphics.


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