High speed CO2 laser surface modification of iron/cobalt co-doped boroaluminosilicate glass and the impact on surface roughness, gloss and wettability

S. D. Hodgson, D. G. Waugh, A. Gillett, J. Lawrence

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A preliminary study into the impact of high speed laser processing on the surface of iron and cobalt co-doped glass substrates using a 60 W continuous wave (cw) CO2 laser. Two types of processing, termed fill-processing and line-processing, were trialled. In fill-processed samples the surface roughness of the glass was found to increase linearly with laser power from an S a value of 20.8 nm-2.1 μm at a processing power of 54 W. With line processing, a more exponential-like increase was observed with a roughness of 4 μm at 54 W. The change in surface properties of the glass, such as gloss and wettability, have also been measured. The contact angle of water was found to increase after laser processing by up to 64°. The surface gloss was varied between 45 and 100 gloss units (GUs).

Original languageEnglish
Article number076102
Number of pages11
JournalLaser Physics Letters
Issue number7
Publication statusPublished - 1 Jul 2016
Externally publishedYes



  • CO laser
  • glass
  • gloss measurement
  • materials processing
  • surface roughness

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)
  • Instrumentation

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