In recent years, the demand for the continuous wave (CW) fiber lasers of several kilowatts output power is increasing in use for metal materials processing. Fujikura group have all principal technologies required for constituting fiber lasers. We succeeded in commercializing the CW fiber laser of 4 kW output power by using those technologies. Our 4 kW CW fiber laser product has a high tolerance...

As a materials processing technique, laser ablation was utilized for the first time in the 1960's, after the first commercial ruby laser was invented. Nevertheless, as a thin film growth method it did not attract much research interest until the late 1980 ́s, when it has been used for growing high temperature superconductor films. Since then, the development of the pulsed laser deposition (PLD) ...

Long-standing industry demand for “extended status messages” from galvanometer-based scan heads and ever-increasing dynamical requirements in industrial laser materials processing, e.g. due to advancing laser sources, have lead to the development of digital servo controls for galvanometers. The advanced control algorithms of a digitally controlled scan system lead to highly improved dynamics co...

Non-Gaussian beam profiles such as Bessel or annular beams enable novel approaches to modifying materials through laser-based processing. In this review paper, properties, generation methods and emerging applications for nonconventional beam shapes are discussed, including Bessel, annular, and vortex beams. These intensity profiles have important implications in a number of technologically rele...

Laser is a powerful tool in many applications. It is especially useful in material processing. Thanks to it's narrow frequency bandwidth, coherence and high power density this instrument is used in many scientific research works and experiments. Often the light beam is intense enough to vaporize the hardest and most heat resistant materials. Besides, due to its high precision, reliability and s...