Extraordinary enhanced absorptivity of gold surface ablated with femtosecond laser pulses

A. Y. Vorobyev; Chunlei Guo; V. S. Makin; N. G. Kokody; V. M. Kuzmichev

doi:10.1117/12.793443

5 March 2008 Extraordinary enhanced absorptivity of gold surface ablated with femtosecond laser pulses

A. Y. Vorobyev, Chunlei Guo, V. S. Makin, N. G. Kokody, V. M. Kuzmichev

Proceedings Volume 7009, Second International Conference on Advanced Optoelectronics and Lasers; 700913 (2008) https://doi.org/10.1117/12.793443
Event: Second International Conference on Advanced Optoelectronics and Lasers, 2005, Yalta, Ukraine

Abstract

Surface relief topography and absorptivity enhancement due to surface structural modification induced by multi-pulse femtosecond laser ablation of a bulk gold sample are studied. It is shown that the enhancement of the absorptivity in multi-pulse ablation is caused by a combination of nano-, micro-, macro-structural surface modifications. Femtosecond laser-induced surface nanostructuring is found to be a significant factor enhancing the absorptivity. This absorptivity enhancement of the nano-structured surface is explained as a result of both multiple light reflections from produced ramified gold surface and resonant linear and nonlinear light absorption by coupled nanostructures (spheres, wires, cones).

Citation Download Citation

A. Y. Vorobyev, Chunlei Guo, V. S. Makin, N. G. Kokody, and V. M. Kuzmichev "Extraordinary enhanced absorptivity of gold surface ablated with femtosecond laser pulses", Proc. SPIE 7009, Second International Conference on Advanced Optoelectronics and Lasers, 700913 (5 March 2008); https://doi.org/10.1117/12.793443

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