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3 Result(s)

within G. Matthäus Remove this filter Condensed Matter Physics Remove this filter

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  1. Article

    Open Access

    In-volume structuring of silicon using picosecond laser pulses

    We have demonstrated for the first time the permanent local modification of the bulk of silicon by repeated illumination with infrared (1.55 μm) picosecond pulses. Furthermore, we evaluated the characteristics...

    H. Kämmer, G. Matthäus, S. Nolte, M. Chanal, O. Utéza, D. Grojo in Applied Physics A (2018)

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  2. Article

    Open Access

    Selective laser melting of hypereutectic Al-Si40-powder using ultra-short laser pulses

    We investigate the use of ultra-short laser pulses for the selective melting of Al-Si40-powder to fabricate complex light-weight structures with wall sizes below \(100\,\upmu \text {m}\) 100μm combined with high...

    T. Ullsperger, G. Matthäus, L. Kaden, H. Engelhardt, M. Rettenmayr… in Applied Physics A (2017)

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  3. No Access

    Article

    Thermal effects vs. gain in femtosecond laser written waveguides in neodymium doped fused silica

    The influence of thermal effects in gain measurements of fs laser-written waveguides in actively doped glass is reported for the first time. We show that these effects strongly contribute to the signal enhance...

    G. Matthäus, J. Burghoff, M. Will, S. Nolte, A. Tünnermann in Applied Physics A (2006)