Investigation of potential laser-induced heating effects when using thermographic phosphors for gas-phase thermometry

J. Lindén; N. Takada; B. Johansson; M. Richter; M. Aldén

doi:10.1007/s00340-009-3608-7

Investigation of potential laser-induced heating effects when using thermographic phosphors for gas-phase thermometry

J. Lindén^*, N. Takada, B. Johansson, M. Richter, M. Aldén

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

32 Scopus citations

Abstract

The spectral emission from thermographic phosphors in free flow and its dependence of laser energy per cross section area (laser fluence [J/cm ²]) has been investigated. Temperature measurements in gaseous flows using thermographic phosphors require higher laser energy than measurements performed on surfaces, due to lower particle density. A troublesome systematic error associated with high fluences would be introduced if the excitation laser heats the particles. In the presented work, three different types of the thermographic phosphor BaMg₂Al₁₀O₁₇:Eu (BAM) are investigated. Spectra of the phosphorescence are achieved for a range of laser fluences. The results show no indications of the laser heating the particles, making further development of phosphor thermography in free-flow applications feasible.

Original language	English (US)
Pages (from-to)	237-240
Number of pages	4
Journal	Applied Physics B: Lasers and Optics
Volume	96
Issue number	2-3
DOIs	https://doi.org/10.1007/s00340-009-3608-7
State	Published - Aug 2009
Externally published	Yes

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)
General Physics and Astronomy

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title = "Investigation of potential laser-induced heating effects when using thermographic phosphors for gas-phase thermometry",

abstract = "The spectral emission from thermographic phosphors in free flow and its dependence of laser energy per cross section area (laser fluence [J/cm 2]) has been investigated. Temperature measurements in gaseous flows using thermographic phosphors require higher laser energy than measurements performed on surfaces, due to lower particle density. A troublesome systematic error associated with high fluences would be introduced if the excitation laser heats the particles. In the presented work, three different types of the thermographic phosphor BaMg2Al10O17:Eu (BAM) are investigated. Spectra of the phosphorescence are achieved for a range of laser fluences. The results show no indications of the laser heating the particles, making further development of phosphor thermography in free-flow applications feasible.",

author = "J. Lind{\'e}n and N. Takada and B. Johansson and M. Richter and M. Ald{\'e}n",

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T1 - Investigation of potential laser-induced heating effects when using thermographic phosphors for gas-phase thermometry

AU - Lindén, J.

AU - Takada, N.

AU - Johansson, B.

AU - Richter, M.

AU - Aldén, M.

PY - 2009/8

Y1 - 2009/8

N2 - The spectral emission from thermographic phosphors in free flow and its dependence of laser energy per cross section area (laser fluence [J/cm 2]) has been investigated. Temperature measurements in gaseous flows using thermographic phosphors require higher laser energy than measurements performed on surfaces, due to lower particle density. A troublesome systematic error associated with high fluences would be introduced if the excitation laser heats the particles. In the presented work, three different types of the thermographic phosphor BaMg2Al10O17:Eu (BAM) are investigated. Spectra of the phosphorescence are achieved for a range of laser fluences. The results show no indications of the laser heating the particles, making further development of phosphor thermography in free-flow applications feasible.

AB - The spectral emission from thermographic phosphors in free flow and its dependence of laser energy per cross section area (laser fluence [J/cm 2]) has been investigated. Temperature measurements in gaseous flows using thermographic phosphors require higher laser energy than measurements performed on surfaces, due to lower particle density. A troublesome systematic error associated with high fluences would be introduced if the excitation laser heats the particles. In the presented work, three different types of the thermographic phosphor BaMg2Al10O17:Eu (BAM) are investigated. Spectra of the phosphorescence are achieved for a range of laser fluences. The results show no indications of the laser heating the particles, making further development of phosphor thermography in free-flow applications feasible.

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JO - Applied Physics B: Lasers and Optics

JF - Applied Physics B: Lasers and Optics

IS - 2-3

ER -

Investigation of potential laser-induced heating effects when using thermographic phosphors for gas-phase thermometry

Abstract

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