Skip to main content

13 Result(s)

within M. Sentis Remove this filter Manufacturing, Machines, Tools, Processes Remove this filter

and

  1. No Access

    Article

    Investigation of ultrashort laser excitation of aluminum and tungsten by reflectivity measurements

    We determine the laser-induced ablation threshold fluence in air of aluminum and tungsten excited by single near-infrared laser pulses with duration ranging from 15 to 100 fs. The ablation threshold fluence is...

    T. Genieys, M. Sentis, O. Utéza in Applied Physics A (2020)

  2. No Access

    Article

    High temporal resolution and calibration in pump–probe experiments characterizing femtosecond laser–dielectrics interaction

    In the aim of performing pump–probe experiments with a high temporal accuracy, the determination of the perfect temporal overlap of the two incoming pulses is crucial. When addressing laser–dielectrics interac...

    M. Lebugle, O. Utéza, M. Sentis, N. Sanner in Applied Physics A (2015)

  3. No Access

    Article

    Guidelines for efficient direct ablation of dielectrics with single femtosecond pulses

    We provide guidelines to femtosecond laser users to select ad hoc laser parameters, namely the fluence and pulse duration, in the context of the development of ablation processes at the surface of dielectrics ...

    M. Lebugle, N. Sanner, O. Utéza, M. Sentis in Applied Physics A (2014)

  4. No Access

    Article

    Laser-driven high-frequency vibrations of metal blister surface

    Time-resolved interferometric microscopy was applied to investigate laser-induced blistering of a titanium film on a silica substrate. Ablation of the titanium/silica interface by single 0.7 ns pulses within a...

    T. V. Kononenko, M. N. Sinyavsky, V. I. Konov, M. Sentis in Applied Physics A (2013)

  5. No Access

    Article

    Control of material removal of fused silica with single pulses of few optical cycles to sub-picosecond duration

    Surface ablation of a dielectric material (fused silica) by single femtosecond pulses is studied as a function of pulse duration (7–450 fs) and applied fluence (F th<F<10F ...

    O. Utéza, N. Sanner, B. Chimier, A. Brocas, N. Varkentina, M. Sentis… in Applied Physics A (2011)

  6. No Access

    Article

    Shadowgraphic imaging of laser transfer driven by metal film blistering

    A time-resolved shadowgraphic technique was used to investigate local transfer of diamond nanopowder from a thin titanium film on a silica support under irradiation by 450-fs or 50-ps laser pulses. Clean powde...

    T. V. Kononenko, P. Alloncle, V. I. Konov, M. Sentis in Applied Physics A (2011)

  7. No Access

    Article

    Laser transfer of diamond nanopowder induced by metal film blistering

    Blister-based laser induced forward transfer (BB-LIFT) is a promising technique to produce surface microstructures of various advanced materials including inorganic and organic micro/nanopowders, suspensions a...

    T. V. Kononenko, P. Alloncle, V. I. Konov, M. Sentis in Applied Physics A (2009)

  8. No Access

    Article

    Measurement of femtosecond laser-induced damage and ablation thresholds in dielectrics

    The paper is focused on the importance of accurate determination of surface damage/ablation threshold of a dielectric material irradiated with femtosecond laser pulses. We show that different damage characteri...

    N. Sanner, O. Utéza, B. Bussiere, G. Coustillier, A. Leray, T. Itina… in Applied Physics A (2009)

  9. No Access

    Article

    Numerical study of ultra-short laser ablation of metals and of laser plume dynamics

    Numerical modeling is used to investigate the physical mechanisms of the interaction of ultra-short (sub-picosecond) laser pulses with metallic targets. The laser–target interaction is modeled by using a one-d...

    T.E. Itina, F. Vidal, Ph. Delaporte, M. Sentis in Applied Physics A (2004)

  10. No Access

    Article

    Surface nanostructuring of metals by laser irradiation: effects of pulse duration, wavelength and gas atmosphere

    Surface modifications by nanostructuring present a new laser application for improvement of surface properties such as adhesion, mechanical characteristics or corrosion protection. In this study, we report the...

    A. Pereira, A. Cros, P. Delaporte, S. Georgiou, A. Manousaki… in Applied Physics A (2004)

  11. No Access

    Article

    Femtosecond laser ablation of cemented carbides: properties and tribological applications

    Laser ablation with fs laser pulses was performed in air on cobalt cemented tungsten carbide by means of a Ti : sapphire laser (800 nm, 100 fs). Small and moderate fluences (2, 5, 10 J/cm2) and up to 5×104 pulses...

    G. Dumitru, V. Romano, H.P. Weber, Y. Gerbig, H. Haefke, S. Bruneau… in Applied Physics A (2004)

  12. No Access

    Article

    Femtosecond ablation of ultrahard materials

    Several ultrahard materials and coatings of definite interest for tribological applications were tested with respect to their response when irradiated with fs laser pulses. Results on cemented tungsten carbide...

    G. Dumitru, V. Romano, H.P. Weber, M. Sentis, W. Marine in Applied Physics A (2002)

  13. No Access

    Article

    Synthesis and properties of Si and Ge nanoclusters produced by pulsed laser ablation

    We show that conventional pulsed laser ablation (PLA) of Si and Ge targets in inert buffer gases is an efficient method of nanocluster synthesis. From a photoluminescence study of Si and Ge nanoclusters produ...

    L. Patrone, D. Nelson, V.I. Safarov, S. Giorgio, M. Sentis, W. Marine in Applied Physics A (1999)