Application differences of various light sources for ultrafast femtosecond laser cutting machines

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The principle of laser cutting is to melt, vaporize, and ablate the surface of the material through high-energy laser beam irradiation, and at the same time use the coaxial high-speed airflow of the beam to blow away the melt to achieve cutting requirements. There are many kinds of laser light sources, such as optical fiber (red light), green light, purple light (ultraviolet), etc. Different light sources have their special advantages and can be used to cut different materials. What are the characteristics and advantages of laser cutting with different light sources? Let’s take a look at the explanations of professional ultra-fast femtosecond laser cutting machine manufacturers.

Ultrafast femtosecond laser cutting machine light source – optical fiber (red light)

Fiber laser is a laser that uses glass fiber doped with rare earth elements as a gain medium. It has the advantages of high stability, high precision, high speed, low cost, and a variety of materials that can be cut. Machinable materials mainly include stainless steel plate, aluminum substrate, ceramic substrate, copper substrate, PCB, galvanized sheet, silicon steel plate, electrolytic plate, titanium alloy, ceramic sheet, carbon steel, aluminum alloy, brass, copper, pickling plate, , manganese alloy, etc., suitable for cutting various metal materials.

Ultra-fast femtosecond laser cutting machine light source – green light

The wavelength of green light is about 532mm, the light spot is small, and the focal length is shorter. It belongs to the cold processing mode and has unique advantages in precision cutting micromachining. For example, it is widely used in laser micro-processing industries such as medical brackets, circuit boards, glass, ceramics, jewelry, and glasses. Applicable materials for green light: cover film, FPC soft board, PCB soft and hard board, PET/PI/PP and other flexible films, ultra-thin glass, ceramic substrate and other materials.

Ultrafast femtosecond laser cutting machine light source – ultraviolet (purple light)

Ultraviolet laser has a wavelength of 355nm, which is an all-round light source in terms of beam types, and has a small spot. It is widely used in laser cutting, marking, and welding. Compared with optical fibers and CO2, it has special cutting capabilities, especially in ultra-thin metal cutting. No burrs, smooth incision, fast speed and low energy consumption. The processing materials suitable for Ziguang mainly include cover film, FPC soft board, PCB soft and hard board, FPC auxiliary materials, ultra-thin metal, ceramics, polymer materials, resin, silicon wafer, PET/PI/PP film, adhesive film, copper foil , Explosion-proof film, electromagnetic film, Sony glue and other flexible films.

Optical fiber ultra-fast femtosecond laser cutting machines are mainly used for cutting metal materials. In the semiconductor integrated circuit industry such as circuit boards, ultraviolet and green light cutting machines are basically put into production. Ultra-fast femtosecond ultra-violet laser cutting machine can take into account the cutting of FPC soft board, IC chip cutting and some ultra-thin metal cutting in the field of PCB, while the high-power ultra-fast femtosecond laser cutting machine of green light can only do PCB in the field of PCB The cutting of hard boards can also be cut on FPC soft boards and IC chips, but the cutting effect is lower than that of ultraviolet lasers. Green light ultra-fast femtosecond laser cutting machine is cheaper than ultraviolet ultra-fast femtosecond laser cutting machine, and the early processing efficiency is higher, but as the power of ultraviolet ultra-fast femtosecond laser cutting machine continues to rise, this advantage The gap gradually narrowed.

Through the above introduction, we have learned the difference between the three light sources commonly used in ultra-fast femtosecond laser cutting machines, and can choose a suitable ultra-fast femtosecond laser cutting machine for our own processing materials, so that the processing quality is higher and the efficiency is higher. Our main products are purple light, green light, optical fiber ultra-fast femtosecond laser cutting machines of various powers, welding machines, marking machines and automatic loading and unloading systems, which are widely used in medical equipment, electronic 3C structural parts, semiconductor integrated circuits Laser micromachining of , auto parts, etc., click online consultation to make an appointment for proofing!