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Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 21, Iss. 10 — May. 20, 2013
  • pp: 11628–11637

Rapid fabrication of surface micro/nano structures with enhanced broadband absorption on Cu by picosecond laser

Peixun Fan, Minlin Zhong, Lin Li, Ting Huang, and Hongjun Zhang  »View Author Affiliations

Optics Express, Vol. 21, Issue 10, pp. 11628-11637 (2013)

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A surface micro/nano structuring technique was demonstrated by utilizing a picosecond laser beam to rapidly modify the optical property of copper surfaces with a scanning speed up to tens of millimeters per second. Three kinds of surface micro/nanostructures corresponding to three levels of reflectance were produced which are obviously different from those induced by a femtosecond or nanosecond laser. Specifically, a porous coral-like structure results in over 97% absorptivity in the visible spectral region and over 90% absorptivity in average in the UV, visible, and NIR regions (250 – 2500 nm). Potential applications may include solar energy absorbers, thermal radiation sources, and radiative heat transfer devices.

© 2013 OSA

OCIS Codes
(140.3390) Lasers and laser optics : Laser materials processing
(160.3900) Materials : Metals
(160.4760) Materials : Optical properties
(220.4000) Optical design and fabrication : Microstructure fabrication
(220.4241) Optical design and fabrication : Nanostructure fabrication

ToC Category:
Laser Microfabrication

Original Manuscript: February 5, 2013
Revised Manuscript: April 12, 2013
Manuscript Accepted: April 18, 2013
Published: May 6, 2013

Peixun Fan, Minlin Zhong, Lin Li, Ting Huang, and Hongjun Zhang, "Rapid fabrication of surface micro/nano structures with enhanced broadband absorption on Cu by picosecond laser," Opt. Express 21, 11628-11637 (2013)

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