You are here
Green Laser Welding
Our MIYACHI Green Laser Welder is designed to weld copper, gold and other materials with high reflectance.
Welding copper and other materials with high reflectance is a difficult task and micro-welding presents an even greater challenge. Laser welding offers a useful method for joining and provides a non-contact process that is highly suited for automation. However, the reflectivity of copper, gold and other materials at the 1064 nm wavelength has always been a barrier to implementing laser welding. By using a 532 nm green Nd:YAG laser welder this barrier has been removed and it offers a viable method for micro-welding copper and other conductive materials in high volumes.
Green Laser Welding is a unique solution thanks to its wavelength of 532 nm, its flexible use of small fibers and its considerably changed resonator design.
Green Laser Welding video
Green Laser Welding Benefits:
- For solder-less joining of semiconductor substrate.
- SHG laser can weld copper wire directly onto a semiconductor substrate without using solder.
- Combination of YAG fundamental laser and SHG laser enables thick copper plates to be welded, which is difficult to do by conventional methods.
- SHG laser is the best solution for welding copper and gold.
- Copper and gold are materials with high reflectance and are considered to be materials that are hard to weld.
- The SHG laser has a wavelength of 532 nm which is a half that of a fundamental laser (1064 nm). This makes laser absorbance in copper and gold 4.5 to 20 times higher than with a fundamental laser.
- Even copper and gold do not reflect the SHG laser.
Green Laser Welding Applications
Green laser welding with a wavelength of 532 nm is suitable for welding gold wire to pad, welding silver-plated copper wire, welding gold plated copper wire and many other applications that involve joining highly reflective materials..