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Laser drilling in thin materials with bursts of ns-pulses generated by stimulated Brillouin scattering (SBS)

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Abstract

A passively Q-switched laser with a nonlinear mirror on the basis of stimulated Brillouin scattering (SBS), generates bursts of pulses with a few 10 ns pulse duration and a separation between 20–90 μs. Percussion drilling and trepanning are performed in different materials with 1 mm thickness. The optimum parameter set of these pulse trains with regard to the burr height and ablation rate is investigated. Differences in the processing results between single pulse and multi pulse structures are discussed. In addition the laser allowed for transiently mode locked operation. Results for mode locked and merely Q-switched operation were compared.

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Authors and Affiliations

  1. Institute for Physics, University of Potsdam, Am Neuen Palais 10, 14469, Potsdam, Germany

    M. Ostermeyer, P. Kappe & R. Menzel

  2. University of Stuttgart, Stuttgart, Germany

    S. Sommer & F. Dausinger

Authors
  1. M. Ostermeyer
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  2. P. Kappe
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  3. R. Menzel
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  4. S. Sommer
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  5. F. Dausinger
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Corresponding author

Correspondence to P. Kappe.

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PACS

79.20.Ds; 42.62.Cf; 42.60.By

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Ostermeyer, M., Kappe, P., Menzel, R. et al. Laser drilling in thin materials with bursts of ns-pulses generated by stimulated Brillouin scattering (SBS). Appl. Phys. A 81, 923–927 (2005). https://doi.org/10.1007/s00339-005-3301-6

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  • DOI: https://doi.org/10.1007/s00339-005-3301-6

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