![]() We present results on significantly improved weld seam width constancy and enlarged process windows compared to Gaussian or flat-top beam profiles. Diffractive optical elements (DOE) can play a crucial role in optimizing the laser intensity profile towards the optimal M-shape beam for enhanced weld seam quality. With the advent of fiber lasers with excellent beam quality, the possibility to modify and optimize the beam profile by beam-shaping elements has opened. ![]() Traditionally, diode lasers were employed for plastic welding with flat-top beam profiles. At the same rate, demands on the quality of the weld, the flexibility of the production system and on processing speed have increased. hot-plate, vibration or ultrasonic welding. More and more, it replaces other welding technologies for polymers, e. Laser welding of polymers increasingly finds application in a large number of industries such as medical technology, automotive, consumer electronics, textiles or packaging. An optional angle multiplier may be used between the electro - optic diffraction grating and the reflective grating.ĭiffractive beam shaping for enhanced laser polymer welding The patent concerns an electro - optic diffraction grating tuned laser comprising a laser medium, output mirror, retro-reflective grating and an electro - optic diffraction grating beam deflector positioned between the laser medium and the reflective diffraction grating. The "raw" scattered light data is then passed to the calculation algorithm where it will be transformed into a particle size distribution.įor more information about acquiring an instrument, click here.Electro-Optic Diffraction Grating Tuned Laser.
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