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Glass Micro-Welding with Picosecond Lasers

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Glass Micro-Welding with Picosecond Lasers

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There is need in several fields, such as microfluidics and medical device packaging, to bond glass to glass, or glass to other materials, without the use of an adhesive or intermediate layer. Laser micro-welding accomplishes this by using an ultrashort pulse laser to generate a high intensity focus at the interface between the two materials, causing the materials to melt and intermingle. Bonds produced by this method are very narrow, <100 µm, preserving optical clarity and are stable and inert. Recently engineers at the MKS Spectra-Physics® industrial applications lab demonstrated laser microwelding using a 50 W infrared IceFyre® 1064-50 picosecond laser system, for both glass-to-glass welding and glass-to-aluminum welding.

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