Laser-induced fluorescence measurements of absolute atomic densities: concepts and limitations

H F Dobele, T Mosbach, K Niemi, V Schulz-von der Gathen

Research output: Contribution to journalArticlepeer-review


The potential of laser-induced fluorescence spectroscopy of atoms is reviewed with emphasis on the determination of absolute densities. Examples of experiments with single-photon and two-photon excitation are presented. Calibration methods applicable with the different schemes are discussed. A new method is presented that has the potential to allow absolute measurement in plasmas of elevated pressure where collisional depletion of the excited state is present.

Original languageEnglish
Pages (from-to)S31-S41
Number of pages11
JournalPlasma sources science & technology
Issue number2
Publication statusPublished - May 2005

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