High-speed laser beam diagnostics for pulsed lasers

Jochen Bahnmueller; Markus Beck; Ruediger Maestle; Friedrich Dausinger

doi:10.1117/12.326651

9 October 1998 High-speed laser beam diagnostics for pulsed lasers

Jochen Bahnmueller, Markus Beck, Ruediger Maestle, Friedrich Dausinger

Proceedings Volume 3418, Advances in Optical Beam Characterization and Measurements; (1998) https://doi.org/10.1117/12.326651
Event: Lasers and Materials in Industry and Opto-Contact Workshop, 1998, Quebec, Canada

Abstract

Since pulsed Nd:YAG lasers are used more and more in industrial production, there is a need for the fast and reliable beam characterization of these devices. This is even more important for flash-lamp-pumped laser systems which show strong fluctuations in the energy density distribution of their single pulses resulting in quality or performance variations and poor reproducibility in material processing. Within this paper the requirements for a diagnostic device used for observation and measurement of pulsed laser radiation are defined with respect to the needs of the laser drilling process. This device must be able to observe the shot to shot stability of the main beam parameters. Unfortunately, the most common beam measurement devices are designed mainly for cw-beam diagnostics. For this reason, we have investigated a measurement procedure and developed a prototype for laser beam diagnostics adapted to the needs of laser material processing. The special demands of the process, the measurement principle as well as the prototype and first experimental results will be discussed.

Citation Download Citation

Jochen Bahnmueller, Markus Beck, Ruediger Maestle, and Friedrich Dausinger "High-speed laser beam diagnostics for pulsed lasers", Proc. SPIE 3418, Advances in Optical Beam Characterization and Measurements, (9 October 1998); https://doi.org/10.1117/12.326651

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