PMID: 9445467Feb 10, 1998Paper

Interband electronic excitation-assisted atomic-scale restructuring of metal surfaces by nanosecond pulsed laser light

Science
H J ErnstL Douillard

Abstract

Interaction of high-power laser light with materials often causes irreversible damage of the near-surface region. It is shown that copper single-crystal surfaces can be patterned by laser light. Irradiation with green light produced adatoms and vacancies, which self-organized into nanoscale pyramids. This restructuring can be removed by annealing. In contrast to green light, infrared laser irradiation at equivalent absorbed energy density did not produce any structural change. This, for metallic systems, unforeseen spectral difference in laser light action points to a concerted process as the source for structural modification, which involves long-lived primary excitation of localized d-electrons through interband transition together with phonon excitation.

References

Apr 18, 1997·Science·Z Zhang, M G Lagally
May 4, 1992·Physical Review Letters·W S Fann Bokor T Bell Laboratories
Jan 3, 1994·Physical Review Letters·H ErnstJ Lapujoulade
Nov 15, 1982·Applied Optics·C D MarrsJ O Porteus

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Citations

Aug 5, 2003·Micron : the International Research and Review Journal for Microscopy·W ZhangD X Li
Dec 16, 2011·The Journal of Chemical Physics·Natalia García Rey, Heike Arnolds
Nov 30, 2006·Proceedings of the National Academy of Sciences of the United States of America·Michael S GrinoldsAhmed H Zewail
Jun 15, 2011·Physical Review Letters·Philippe GaillardOlivier Pierre-Louis
Jul 20, 2001·Physical Review Letters·O Pierre-Louis, M I Haftel
Aug 11, 2005·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·M Khenner

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