Over the years, in order to enable users to produce better products, but also to help them effectively control some challenging applications. With the development of optical components and industrial laser processing, 50mw laser pointer beam shaping technique also allows the user to move forward in a very flexible way, by adjusting the beam shape to meet the needs of specific applications. In the past few years, TRUMPF has fully mastered the technology of forming arbitrary beam on the workpiece, thus improving the material processing.

Beam shaping technique based on optimized design of wave optics and improvement of manufacturing method of fused quartz transmission element. The beam shaping technique is not only suitable for ultrafast (or ultra short) pulse lasers, but also for multi kilowatt CW (CW) lasers. Beam shaping technology brings high efficiency and power handling capacity at the same time, can also provide a flexible beam shaping method for a variety of applications, from basic mode to multimode, continuous emission from ultra fast, and can cover a wide spectrum range.

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In X, y, Z axis three directions to adjust the beam intensity distribution, will bring the greatest flexibility for the application. In addition to being able to adjust the intensity of the beam, but also can produce multiple spots. This method has certain cost advantages, because the technology of burning laser pointer products can use standard, which means that the laser source can use standard (such as continuous conduction fiber laser) and standard, without any specific adjustment or modification.

Using this beam shaping technology, TRUMPF has developed a number of optimized new processing methods. The newly developed two applications are: the use of ultra short pulse laser cutting glass and artificial sapphire; as well as to improve the application of automotive galvanized steel. These two new developments make the production process more efficient and flexible, opening the door to new markets. In addition, they can be used in single mode laser source and multimode laser pointer source, which shows the potential of beam shaping technology.

Because the glass is transparent to visible and near infrared light, it is not logical to use a laser with a wavelength in the transmission band to process the glass. However, when the pulse width is used in the picosecond or femtosecond range of ultrafast pulse laser processing of glass, light is not simply through the processed material. On the contrary, the huge space and time density of the photons in the pulse are beneficial to the generation of free electrons. Subsequently, these electrons absorb more photons. The improved absorption mechanism of the transparent material makes it possible to use laser to process artificial sapphire and glass.

The success of this process depends mainly on the modification of materials. Different from the use of each pulse directly through the material, ultrafast pulsed green laser pointer beam is focused on the internal glass, glass, ultrafast pulsed laser beam to want along the cutting line, modified a narrow area. Subsequently, the glass is broken along the narrow, narrow region of the laser. This method can obtain a smooth cutting surface, and the cutting precision can reach 0.01mm.

This technology is developed for cutting hard thin glass, such as the cover plate of the smart phone display screen. When cutting the smart phone display glass cover, the use of TRUMPF's Top Cleave beam shaping lens group, you can get up to 1m/s cutting speed. The laser intensity is uniformly distributed along the Z direction of the beam, so the focus is elongated, and the focal spot becomes a focal line with a length width ratio greater than 1000:1. Laser pulses are no longer a layer of glass melting, replaced by a one-time modification of the integrity of the internal split surface.

The automotive industry is becoming more and more interested in the use of hot dip galvanized materials. In addition to the actual difference in corrosion resistance, the cost of hot dip galvanizing is lower than that of zinc plating, and is easier to be obtained all over the world. However, 5mw laser pointer is really difficult to weld hot dip galvanized material by brazing. In the process of processing, due to the presence of coating on the material, usually in the processing of materials on the formation of splash, porosity and surface irregularities and other issues. However, the use of beam shaping lens, can be divided into a plurality of beam spot, so that the brazing galvanized material become possible, and has obtained the amazing (soldering speed and robot with 4.5m/s) and processing of satisfactory quality, smooth surface material no spatter and porosity.

The three spots on the surface of the material have different diameter and power density when they are brazed. Small spot plays a vital role. The zinc coating can be pre treated and the surface of the part is preheated. A new brazing technology to achieve a more smooth welding surface and faster welding speed. Beam shaping can be achieved by brazing, and if the need to replace the optical fiber is also very simple. Can also be seen from the standard maintenance process, the user only need a high power laser pointer processing head as spare parts for aluminum welding and brazing. The geometrical shape and intensity distribution of the light spot, especially the energy distribution among the various light spots are marked in the beam shaping element. In addition, the direction of the light spot is fixed with respect to the shaping element, and is not affected by any other parameters.