In recent decades, clad-pumped fiber lasers have been very successful in the laser industry, and recent reports show that this growth will continue to be in good shape. Whether for low-power fiber laser marking, or for cutting and welding of high-power fiber 1000mw laser pointer are rapidly expanding market share. Recent reports also show that fiber lasers used in the cutting of the largest market sheet metal for industrial lasers will soon surpass the CO2 lasers. In addition, fiber laser elements such as fiber amplifiers and fiber collimators have also been widely used as important elements in picosecond and femtosecond short pulse lasers.
Many fiber lasers, but not all, are distinguished from other laser processes by the single core junction diode laser pumping source. As a global leader in high-power fiber lasers, the success is largely due to the stability and lifetime of these single-core junction diodes. One significant advantage of using a single-core diode pump instead of a diode bar or array is that the active fiber can be pumped at a duty cycle of 0-100%, that is, a duty cycle of 0-100% Modulation of continuous burning laser pointer. This adjustment range also applies to QCW fiber lasers.
Actually, the active fiber core of the fiber laser itself is small (<15 μm), so it can only form single-mode output. This not only enables efficient generation of coherent beams, but also by virtue of its ultra-high surface area / volume ratio, almost self-cooling optical fiber can be. This solves the problem of temperature fluctuations and associated thermal effects, ensuring extremely stable beam output. Another important effect of using a small core diameter active fiber to output a laser beam is to output the laser light to the high power laser pointer processing head via a single mode passive fiber, if necessary. In this case, the beam has maximum brightness and focusing performance. In many material processing applications, a professional technician can obtain different beam diameters and spot sizes from a laser by accessing a larger transmission fiber, or by simply adding an optocoupler.
The single core junction diode pump makes another feature of the quasi-continuous laser possible. The laser can be set to either pulse mode or continuous mode, which is the meaning of the prefix "quasi" for QCW. In continuous mode, quasi-continuous fiber 5000mw laser pointer have an average power of 30% higher. In Continuous Modulation mode, the QCW minimizes thermal effects on components when cutting. Similarly, in the continuous mode, with the low-mode optical fiber scanning galvanometer QCW can be ultra-high-speed, high aspect ratio of the 'mini keyhole' welding, which requires very high requirements of the assembly components.
Time-domain pulse shaping is a technique used for lamp-pumped lasers for many years. For some medical device processing, such as cardiac pacemaker titanium shell laser welding, this technology is widely used. Pulse-Shaped Generators (PSG) A dedicated Graphical User Interface (GUI) enables flexible pulse shaping in time-domain, allowing the QCW brightest laser pointer to provide gradient-varying pulse energy. This can be used to avoid "welding pipe" or welding deformation such as air holes at the beginning and end of the laser welding. Internal microwelding tests also show that extending the tail of the laser welding pulse reduces the ripple caused by the surface tension during solidification and so makes the weld surface smoother.
Infrared laser welding of polymers In people's expectations, it was found in small components such as micro-fluid components in the application requirements. In these applications, the diameter of the transmission fiber is usually much larger than the diameter of the transmission fiber used in the metalworking process, so that the laser beam has the flat top light characteristics required for polymer welding. High-intensity fiber 2000mw laser pointer beam through the long focal length lens can be obtained after the polymer welding required smaller spot size (in the polymer welding). So the process allows the workpiece vertical direction of the workpiece shape changes. In other applications, a collimated parallel beam is used when the height in the vertical direction of the workpiece and the distance to the workpiece are not relevant.