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

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

doi:10.1088/0022-3727/33/8/310

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 journal › Article › peer-review

11 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 language	English
Pages (from-to)	945-947
Number of pages	3
Journal	Journal of Physics D: Applied Physics
Volume	33
Issue number	8
DOIs	https://doi.org/10.1088/0022-3727/33/8/310
Publication status	Published - 21 Apr 2000
Externally published	Yes

ASJC Scopus subject areas

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

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10.1088/0022-3727/33/8/310

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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.",

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AU - Johnston, E. P.

AU - Li, L.

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Y1 - 2000/4/21

N2 - 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.

AB - 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.

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ER -

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

Abstract

ASJC Scopus subject areas

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