(PDF) Blue diode lasers – Understanding and influencing melt pool
IOP Conference Series: Materials Science and Engineering PAPER • OPEN ACCESS Blue diode lasers – Understanding and influencing melt pool dynamics in copper To cite this article:
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Blue lasers offer new power for copper manufacturing
These laser diodes use the semiconductor material indium gallium nitride to create blue light when pumped directly with electrical current. Copper absorbs blue light
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Copper reflects most infrared laser energy, which makes initial laser absorption unstable. High thermal conductivity quickly removes heat from the weld zone, requiring high power density.
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Blue diode lasers are increasingly relevant in industrial copper applications that need efficient energy use and scalable production. Common examples include battery manufacturing, busbar welding,
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The Copper/Tungsten heatsink submount with gold/tin solder is a very cost effective method that provides both good thermal conductivity and thermal expansion that matches the silicon ceramic,
Understanding of Laser, Laser diodes, Laser diode packaging and its
To help dissipate the heat, the conventional method of laser diode packaging is to solder laser bar onto a heatsink, which is made of copper due to its high thermal conductivity, namely, faster heat transfer.
Laser metal deposition of pure copper on stainless steel with blue and
That is, IR diode lasers require a larger laser intensity to obtain a continuous bead, which is likely due to the insufficient heating of the substrate caused by the low absorptivity of copper to
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One reason is the electrification of the automotive industry, where various electrical components are made of copper to improve electrical and thermal conductivity. Lasers provide a fast
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A blue diode laser is expected to be effective in shaping pure copper parts because light absorptance of pure copper at blue light is higher than that of near-infrared light.
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In comparison to green laser light or fiber lasers, blue diode lasers offer significant advantages for welding highly conductive and reflective materials such as copper.
Cooling laser diodes
Most laser diode cooling technologies cool the laser chip only from one side – the p-side – which is located directly above the microchannels. The n-side is usually left
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Laser diodes can produce a narrow beam of laser light in which all the light waves have similar wavelengths. Because of this property, laser beams are very bright
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Such laser systems achieve unsurpassed results especially when welding the smallest of copper components. Copper is the most important material in the transmission of electrical signals and is
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Copper welding includes MIG, TIG & laser welding. These techniques are suitable for electrical engineering, pipeline construction & industrial connections.