Dynamics of femtosecond laser-induced periodic surface structures on metals

Jincheng Wang; Chunlei Guo

doi:10.1117/12.782743

12 May 2008 Dynamics of femtosecond laser-induced periodic surface structures on metals

Jincheng Wang, Chunlei Guo

Author Affiliations +

Proceedings Volume 7005, High-Power Laser Ablation VII; 70052V (2008) https://doi.org/10.1117/12.782743
Event: High-Power Laser Ablation 2008, 2008, Taos, New Mexico, United States

Abstract

We perform a comparison study of periodic structures on the surfaces of three different noble metals, Cu, Ag, and Au, following femtosecond laser radiation. Under identical experimental conditions, laser-induced surface patterns show distinctly different level of morphological clearness on the three different metals. Simply calculations based on metal melting fail to explain the pattern differences. We show that our observation result from the competition of two ultrafast processes, electron-phonon energy coupling and hot electron diffusion, following femtosecond laser heating of metals.

Citation Download Citation

Jincheng Wang and Chunlei Guo "Dynamics of femtosecond laser-induced periodic surface structures on metals", Proc. SPIE 7005, High-Power Laser Ablation VII, 70052V (12 May 2008); https://doi.org/10.1117/12.782743

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