Fraunhofer ILT is one of the most important contracting R & D institutes of its sector worldwide. Its experts develop and optimize laser beam sources and laser processes.
With over 480 employees, more than 19,500 m² net floor space the Fraunhofer Institute for Laser Technology ILT is one of the world's most important contract research and development institutes in the fields of laser development and laser applications. Our core competencies include the development of new laser beam sources and components, laser measurement and testing technology, and laser manufacturing technology. This includes cutting, ablation, drilling, welding and soldering as well as surface finishing, micro manufacturing and additive manufacturing, among others. The areas of application for laser beam sources and processes include production and metrology, energy and mobility, medical and environmental technology, and quantum technology. Together with excellent partners from German and international research and industry, we develop, for example, satellite-based measurement systems for climate research or frequency converters for a fiber-based quantum internet.
Fraunhofer Institute for Laser Technology ILT
Phone: +49241 8906-0
The technology field - Lasers and Optics - focuses on developing innovative laser beam sources and high quality optical components and systems. Fraunhofer's team of experienced laser engineers builds beam sources which have tailor-made spatial, temporal and spectral characteristics and ranging from μW to GW. Furthermore, this technology field has a great deal of expertise in beam shaping and guiding, packaging of optical high power components and designing optical components.
In general, the lasers and optics developed here can be applied in areas ranging from laser material processing and measurement engineering to illumination applications and medical technology, all the way to use in aerospace applications, quantum technology and pure research. Whether our customers are laser manufacturers or users, they do not only receive tailor-made prototypes for their individual needs, but also expert consultation to optimize existing systems.
The simulation software SEMSIS, which was developed at Fraunhofer ILT, allows multiphysics modeling of edge-emitting lasers and VCSELs considering their electrical, optical, thermal and mechanical properties in a self-consistent manner. Special use-cases include the prediction of the lateral emission characteristics of broad-area emitters and the computation of threshold values for catastrophic optical damage (COD) of edge-emitting lasers under external optical feedback.
Copper and aluminum are crucial for many industrial applications due to their high thermal and electrical conductivity. Compared to conventional joining techniques like soldering and clamping, laser welding offers long term stable joints with lower electrical and thermal resistances. The absorption of these alloys is significantly higher in the blue and green than in the infrared. Fraunhofer ILT is developing beam sources, optical systems and welding processes for these applications.
When increasing the usable build-volume of conventional Laser Powder Bed Fusion (LPBF) systems, the challenge is to realize a homogeneous shielding gas flow over the entire powder bed. An increase in productivity is also necessary to be able to use such systems economically. To meet these challenges, the Fraunhofer ILT has developed a novel LPBF machine concept (build-volume: 1000x800x350 mm³) based on a movable processing head and five fiber lasers as part of its lighthouse project futureAM.
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