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

Peixun Fan, Minlin Zhong, Lin Li, Ting Huang, Hongjun Zhang

Research output: Contribution to journalArticlepeer-review

42 Citations (Scopus)

Abstract

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 corallike 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.

Original languageEnglish
Pages (from-to)11628-11637
Number of pages10
JournalOptics Express
Volume21
Issue number10
DOIs
Publication statusPublished - 2013 May 20
Externally publishedYes

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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