Micromachining of metals with ultra-short Ti-Sapphire lasers: Prediction and optimization of the processing time

David Bruneel (1) , Eric Audouard (1) , N. Huot (1) , Harzic Ronan Le (2) , König Karsten (3)

1 LHC - Laboratoire Hubert Curien
2 Fraunhofer IBMT - Fraunhofer Institute for Biomedical Engineering [Sulzbach]
3 Faculty of physics and mechatronics

We investigate processing times of ultrafast laser machining in the case of metals (copper and stainless steel). At a fluence of 2.5 J/cm2, measurements of processing times are in good agreement with calculations based on the ablation rates. We study the influence of laser repetition rates for 1, 5, 10 and 15 kHz. A linear reduction of the processing time can be expected with an increase of the repetition rate.

Keywords: Ultrafast laser processing; Laser processing time; Ablation rates; Metals processing

Domains: Optics / Photonic

David Bruneel, Eric Audouard, N. Huot, Harzic Ronan Le, König Karsten. Micromachining of metals with ultra-short Ti-Sapphire lasers: Prediction and optimization of the processing time. Optics and Lasers in Engineering, 2010, 48, pp.267-271. ⟨ujm-00553644⟩