In cooperation with the Chair of Laser Technology (LLT), the Fraunhofer Institute for Laser Technology (ILT)—Europe’s leading center for contract research and development in the field of laser technology—is offering the opportunity to write a thesis on the topic: »DUV-Assisted Athermal Laser Grooving of Low-κ Dielectrics for Advanced Packaging«.

In advanced microelectronic packaging, low-κ dielectrics (e.g. nanoporous SiCO:H) are structured by laser grooving to reduce mechanical stress during chip dicing. State-of-the-art UV ultrashort pulsed lasers at 343 nm operate with high pulse overlap, causing cumulative heating, melt formation in the silicon substrate, delamination, and burr—critical defects when substrates are thinned below 50 µm. The fundamen...