Title:
ADAPTIVE, FEEDBACK-CONTROLLED MATERIAL PROCESSING USING ULTRA-SHORT LASER PULSES
Document Type and Number:
WIPO Patent Application WO2004039530
Kind Code:
A3
Abstract:
The invention relates to material processing using laser pulses and to a method and device for the microstructured, ablative processing of material (22), said processing being achieved in one or more sequential process steps by individual laser pulses. (14). According to the invention, ultra-short laser pulses are shaped in a precise manner with the aid of a phase modulator (12), the material (22) is irradiated with said pulses and the quality of the working process that results from the irradiation is recorded and evaluated using computer technology (32). This can, for example, be carried out with the aid of a signal emitted by laser-induced breakdown spectroscopy (LIBS). Said evaluation signal is evaluated by an optimisation algorithm and the information thus obtained is used immediately to calculate additional, potentially more suitable laser pulse forms, which are in turn set by the computer-controlled (34, 36) phase modulator (12). The material (22) is irradiated again with said new laser pulses (14), in such a way that the same conditions prevail on the material (22) as during the preceding pulse. The iteration is continued until an optimum efficiency is reached for the processing of the material.
More Like This:
| WO/2023/189592 | LASER LIGHT CORRECTION METHOD |
| JP3857021 | LASER BEAM SPOT WELDING EQUIPMENT |
| JP2020148804 | LASER REPAIR METHOD AND LASER REPAIR DEVICE |
Inventors:
BAUMERT THOMAS (DE)
ASSION ANDREAS (DE)
WOLLENHAUPT MATTHIAS (DE)
ASSION ANDREAS (DE)
WOLLENHAUPT MATTHIAS (DE)
Application Number:
PCT/DE2003/003530
Publication Date:
November 18, 2004
Filing Date:
October 23, 2003
Export Citation:
Assignee:
UNIV KASSEL (DE)
BAUMERT THOMAS (DE)
ASSION ANDREAS (DE)
WOLLENHAUPT MATTHIAS (DE)
BAUMERT THOMAS (DE)
ASSION ANDREAS (DE)
WOLLENHAUPT MATTHIAS (DE)
International Classes:
B23K26/03; B23K26/06; B23K26/067; B23K26/36; (IPC1-7): B23K26/03; B23K26/06; B23K26/36
Domestic Patent References:
| WO2001083155A1 | 2001-11-08 | |||
| WO2002016070A2 | 2002-02-28 | |||
| WO1995027587A1 | 1995-10-19 | |||
| WO2000067003A1 | 2000-11-09 |
Foreign References:
| US6268586B1 | 2001-07-31 | |||
| DE4320408A1 | 1994-12-22 | |||
| US5969335A | 1999-10-19 | |||
| US5720894A | 1998-02-24 |
Download PDF: