What are the light source applications for UV laser cutting and green laser cutting?

Laser cutting machine is an important tool in the field of cutting and is known as a fast knife. Its principle is to irradiate the surface of the material with a high-density, high-energy laser beam, evaporate and remove part of the material, and form a cut. There are many laser applications on the market, which are divided into many light sources, each of which has different advantages and is applied to various materials.

There are several commonly used light sources in laser cutting in the circuit board industry, optical fiber (red light), purple light (ultraviolet light), and green light. Different light sources are suitable for different materials, according to the material characteristics, material thickness, processing quality requirements, laser beam quality, and the higher the thermal impact requirements, the more different the absorption of the laser band, and the more different the selected Laser Cutting Machine. So, what are the light source applications for UV laser cutting and green laser cutting?

Optical Fiber (Red Light):

Optical Fiber wavelength is 1064nm, with high stability, high precision, fast running speed, low processing cost, high laser power, and a wide variety of cuttable materials, suitable for large-scale product processing;

Optical Fiber Applicable Materials: Stainless Steel Plate, Aluminum Plate, Ceramic Plate, Copper Plate, Printed Circuit Board, Ceramic Plate, Carbon Steel, Aluminum Alloy, Brass, Copper, Pickled Plate, Galvanized Plate, Silicon Steel Plate, Electrolytic Plate, Titanium Alloy, Manganese Alloy, etc. Suitable for cutting various metal materials.

Green light:

The wavelength of green light is 532nm, with a smaller spot and a shorter focal length. It belongs to the cold processing mode and plays an irreplaceable role in precision cutting, especially in the circuit board, glass, ceramics, jewelry, glasses and other industries.

Green light is applicable to materials: precision cutting of cover film, FPC soft board, PCB soft and hard board, PET/PI/PP and other soft films, ultra-thin glass, ceramic substrate and other materials

Violet light (UV):

UV laser has a wavelength of 355nm. This wavelength product is all-round and its spot is also very small. Due to the special wavelength of UM, it has the title of all-round in the traditional processing field. It can be seen in laser marking, laser cutting and laser welding. Fiber laser can't sit still, but it can do it. It can also do what C02 can't process. It performs better in ultra-wave cutting. It can achieve the advantages of burr-free, neat and smooth, fast speed and low energy consumption in the fine and ultra-thin cutting of metal products.

Applicable materials for purple light: covering film, FPC soft board, PCB soft board, FPC auxiliary materials, ultra-thin metal, ceramic, polymer material, resin, silicon wafer, PET/PI/PP film, adhesive film, copper foil, explosion-proof film, electromagnetic film, Sony adhesive and other soft films

Fiber laser is rarely used in the circuit board industry, mainly in the metal industry, and a few are used in aluminum and copper substrates; At present, the circuit board industry is basically UV and green light cutting machines. Since they are all circuit board cutting applications, what are the specific differences?

The main difference between UV laser cutting machine and green laser cutting machine lies in the cost, processing efficiency, processing effect and processing purpose of the equipment. In the PCB field, UV laser cutting machine can take into account FPC soft board cutting, IC chip cutting and some ultra-thin metal cutting, while high-power green laser cutting machine can only cut PCB hard board in the PCB field. Although FPC soft board and IC chip can also be cut, the cutting effect is lower than that of UV laser. Compared with UV laser cutting machine, green laser cutting machine has lower price and higher processing efficiency in the early stage, but with the increase of UV laser cutting machine power, this advantage is gradually caught up. The thermal impact is small and the processing effect is more ideal.