Diode laser-based thermometry using two-line atomic fluorescence of indium and gallium

Research output: Contribution to journalArticle


A robust and relatively compact calibration-free thermometric technique using diode lasers two-line atomic fluorescence (TLAF) for reactive flows at atmospheric pressures is investigated. TLAF temperature measurements were conducted using indium and, for the first time, gallium atoms as temperature markers. The temperature was measured in a multi-jet burner running methane/air flames providing variable temperatures ranging from 1600 to 2000 K. Indium and gallium were found to provide a similar accuracy of ~ 2.7% and precision of ~ 1% over the measured temperature range. The reliability of the TLAF thermometry was further tested by performing simultaneous rotational CARS measurements in the same experiments.


Research areas and keywords

Subject classification (UKÄ) – MANDATORY

  • Atom and Molecular Physics and Optics
Original languageEnglish
Article number278
JournalApplied Physics B: Lasers and Optics
Issue number12
Publication statusPublished - 2017 Dec 1
Publication categoryResearch

Related research output

Borggren, J., 2018 Jan 9, Lund: Department of Physics, Lund University. 140 p.

Research output: ThesisDoctoral Thesis (compilation)

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