Determination of the absorption length of CO2 and high power diode laser radiation for a high volume alumina-based refractory material

J. Lawrence*, Lin Li

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

17 Citations (Scopus)

Abstract

The laser beam absorption lengths of CO2 (10.6 μm wavelength) and a high power diode laser (HPDL) (810 nm wavelength) radiation for an Al2O3/SiO2-based refractory have been determined through the application of Beer-Lambert's law. The findings revealed marked differences in the absorption lengths despite the material having similar beam absorption coefficients for both lasers. The absorption lengths for the Al2O3/SiO2-based refractory of CO2 and a HPDL radiation were calculated as being 345±22 and 198±15 μm, respectively. Moreover, this method of laser beam absorption length determination, which has hitherto been used predominantly with lasers operated in the pulsed mode, is shown to be valid for use with lasers operated in the continuous wave (CW) mode, depending upon the material being treated.
Original languageEnglish
Pages (from-to)71-74
Number of pages4
JournalApplied Surface Science
Volume168
Issue number1-4
Early online date14 Dec 2000
DOIs
Publication statusPublished - 15 Dec 2000
Externally publishedYes

Keywords

  • laser
  • absorption
  • eefractory
  • alumina
  • silica

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