Determination of absorption length of CO2 and high-power diode laser radiation for ordinary Portland cement

J. Lawrence, E. P. Johnston, L. Li

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

The laser beam absorption lengths of the CO2 laser and the high-power diode laser (HPDL) radiation for ordinary Portland cement (OPC) were determined using Beer-Lambert's law. The absorption lengths for the CO2 laser and the HPDL radiation were 470±22 μm and 177±15 μm, respectively. Absorptivity measurements made at room temperature using spectrometers suitable for each laser wavelength revealed that the OPC surface of the concrete absorbed around 75% of the CO2 laser radiation and around 69% of the HPDL radiation. Since these figures are similar, it is reasonable to assume that absorption length is the principal influence on the melt depth.

Original languageEnglish
Pages (from-to)945-947
Number of pages3
JournalJournal of Physics D: Applied Physics
Volume33
Issue number8
DOIs
Publication statusPublished - 21 Apr 2000
Externally publishedYes

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Acoustics and Ultrasonics
  • Surfaces, Coatings and Films

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