AS TGV - Laser percussion drilling
To develop a new femtosecond-laser based technique for high throughput percussion drilling.
About the project:
The AS TGV project aims to develop a new technical solution based on the use of femtosecond lasers to address the TGV (through glass via) technology. This solution will be based on the development of three main pillars:
- A hybrid laser technology to deliver two femtosecond / picosecond beams with controlled time delay between different pulses
- A beam-shaping and a fast-deflection optical system designed to optimize the laser- material coupling and to machine several points simultaneously
- A process tailored to the specific material and its thickness.
The development of the source and the different processes will be carried in parallel, together with the development of a numerical model to simulate the thermal load produced on the material and the laser-material interaction.
ALPhANOV's mission is to establish a new femtosecond / picosecond percussion drilling process by performing a comprehensive study and characterizing the results with the various metrology instruments present at ALPhANOV. FIG. 1 shows the 3D characterization of a cavity measured by optical profilometer obtained in a test on the study of material removal rates in the percussion drilling process.