Properties of the IFSW kW-class-ps laser system and the helical drilling optics.
|IFSW kW-ps laser |
|Pulse duration||8 ps|
|Average power||≤650 W|
|Max. pulse energy||≤2.2 mJ|
|Repetition rate||≤300 kHz|
|Collimated beam diameter||5.2 mm|
|Helical drilling optics (GL-Trepan, GFH GmbH)|
|Rotation speed||0–30 000 rpm|
|Hole diameters||0–1500 μm|
|Focusing and ablation threshold|
|Focal length||400 mm|
|Focus diameter||140 μm|
|Focus position||On the surface|
|Max. fluence||15 J/cm2|
|Ablation threshold (steel, 8 ps, 1030 nm)||0.1 J/cm2|
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