Foundations of optical diagnostics in low-temperature plasmas

Richard Engeln (Corresponding author), Bart Klarenaar, Olivier Guaitella

Research output: Contribution to journalReview articlepeer-review

57 Citations (Scopus)


Over the past few decades many diagnostics have been developed to study the non-equilibrium nature of plasma. These developments have given experimentalists the possibility to measure in situ molecular and atomic densities, electron and ion densities, temperatures and velocities of species in the plasma, to just name a few. Many of the diagnostic techniques are based on the 'photon-in, photon-out' principle and were at first developed to perform spectroscopy on atoms and molecules. Much later they were introduced in the research of plasmas. In this foundation paper we will focus on optical-based diagnostics that are now for quite some time common use in the field of low-temperature plasma physics research. The basic principles of the diagnostics will be outlined and references will be given to papers where these techniques were successfully applied. For a more comprehensive understanding of the techniques the reader will be referred to textbooks.

Original languageEnglish
Article number063001
Number of pages14
JournalPlasma Sources Science and Technology
Issue number6
Publication statusPublished - Jun 2020


  • low-temperature plasma
  • optical diagnostics
  • plasma


Dive into the research topics of 'Foundations of optical diagnostics in low-temperature plasmas'. Together they form a unique fingerprint.

Cite this