Pulsed laser micro-welding
Prozesskombination der Wellenlängen 1064 nm und 808 nm

Highly reflective materials, such as aluminum or copper and their alloys, can be reliably joined using pulsed laser welding. The Laser Zentrum Hannover e.V. (LZH) covers both the process development and the analyses.


Process combination of 1064nm and 808nm wavelength. Photo: LZH

Process combination of 1064nm and 532nm wavelength. Photo: LZH

The joints are pre-conditioned in the first step, and welded in a reproducible way in the second step. Through the combination of these two process steps, a high process security is achieved. Here, two different solid-state lasers are used. Compared to conventional welding with one beam source, the energy input is lower with this process. Even crack-sensitive materials, such as Al 6082, Al 2017, Al 6061 and Al 6063, can be processed.

The use of filler material is an option, too. For this purpose, the LZH provides highly precise system technology that allows for using extra fine wires with a thickness of 0.3mm and above.

If needed, the group „Machines and Controls“ can analyze and optimize an existing process, or develop a completely new joining process.


This service is, among others, used in the following areas:

Manufacturing processes:

  • Pulsed laser welding

Material groups:

  • Alloys
  • Metals

Consulting, development and contract research:

  • Feasibility studies
  • Process and system development
  • Technology transfer from research to industry


Measurements and analyses:

  • Material testing

Fields of application and industrial sectors:

  • Aerospace
  • Automotive
  • Electrical engineering
  • Electronics
  • Material processing
  • Photovoltaics and energy technology
  • Printing technology and graphics
  • Semiconductors
  • Sensor technology

We will be happy to discuss your individual requirements. Please feel free to contact us.