Bent Line Laser Engraving
Fiber lasers have received much attention in recent years, and have become the focus of everyone's research. This is because they have advantages that other lasers can't match. Bent Line Laser Engraving mainly shows: (1) the beam quality is good, and it has a very good monochrome (2) Fiber is both a laser gain medium and a light-guiding medium, so the pumping efficiency is quite high, the core diameter is small, and high power density is easy to form in the fiber. The laser engraver can easily extend the gain length so that the pump light is fully absorbed, so that the total light-to-light conversion efficiency exceeds 60%; (3) the matrix material is SiO2, which has excellent temperature stability; and the cylindrical shape of the fiber The structure has a high surface area / volume ratio, fast heat dissipation, and the ambient temperature is allowed to be -20 to + 7000C. The heat load of its working material is quite small, no cooling system is needed, and it can produce high brightness and high peak power, which has reached 140mw / cm2 ;
(4) Small size, simple structure, working material is flexible medium, can be designed to be quite small and flexible, easy to use, easy to integrate system, and cost-effective; (5) as a doped fiber for laser medium, doped rare earth ions have extremely rich Energy level structure, energy level transitions cover a wide range from ultraviolet to infrared, and can achieve many laser energy transition levels. Bent Line Laser Engraving can be designed and operated in a very wide spectral range (455-3500nm). In addition, the fluorescence spectrum of glass fiber is quite wide. A tunable fiber laser can be obtained by inserting an appropriate wavelength selector with a tuning range of 80nm.