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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 15, Iss. 21 — Oct. 17, 2007
  • pp: 13838–13843

Enhanced optical absorptance of metals using interferometric femtosecond ablation

K. Paivasaari, J. J. J. Kaakkunen, M. Kuittinen, and T. Jaaskelainen  »View Author Affiliations

Optics Express, Vol. 15, Issue 21, pp. 13838-13843 (2007)

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The enhanced optical absorptance in metals was recently demonstrated using femtosecond laser-induced surface structuring. This structuring was obtained by simply focusing the light to the sample surface. Here we demonstrate more efficient absorptance enhancement using interferometric ablation. This interferometric ablation technique produces deeper surface structures and, consequently, higher absorption than structures obtained by just focusing the light to the surface. We also show the measured reflectance spectra over visible region for unaltered and structured stainless steel and copper samples.

© 2007 Optical Society of America

OCIS Codes
(140.3390) Lasers and laser optics : Laser materials processing
(220.4000) Optical design and fabrication : Microstructure fabrication

ToC Category:
Lasers and Laser Optics

Original Manuscript: June 21, 2007
Revised Manuscript: September 13, 2007
Manuscript Accepted: September 18, 2007
Published: October 5, 2007

K. Paivasaari, J. J. J. Kaakkunen, M. Kuittinen, and T. Jaaskelainen, "Enhanced optical absorptance of metals using interferometric femtosecond ablation," Opt. Express 15, 13838-13843 (2007)

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