Advancements in non-equilibrium plasma laser diagnostics

Chair: Gabi Daniel Stancu (CentraleSupélec, France)

Non-equilibrium plasmas are complex reactive environments driven by multiphysics interactions that are employed or studied to meet numerous societal goals. Given the high intricacy of these systems, laser diagnostics remain essential to the advancement of plasma knowledge and engineering. Their exceptional features enable probing with high sensitivity, selectivity, spatial and temporal resolutions crucial plasma parameters such as non-equilibrium temperatures, densities of key reactive species, velocity and flux distributions and fields. The workshop will expose recent progresses achieved in advanced laser diagnostics for the investigation of non-equilibrium plasmas. Fundamental properties of non-equilibrium plasmas are tackled here by resonant or non-resonant, single or multi-photon and multi-wave techniques, including cavities and ultrashort lasers with wavelengths from ultraviolet to the THz spectroscopic domain. Principles, challenges, examples of studies of non-equilibrium plasmas and perspectives will be addressed.

Atomic oxygen measurements with THz absorption spectroscopy, ps-TALIF, and CRDS: A comparison

Jean-Pierre van Helden

Leibniz Institute for Plasma Science and Technology (INP), Germany

LIF studies of hydrid dissociation in electric discharges

Pavel Dvořák

Masaryk University (MUNI), Czech Republic

Non-resonant four-wave mixing diagnostics for the determination of non-equilibrium in plasmas

Alexandros Gerakis

Luxembourg Institute of Science and Technology (LIST), Luxembourg

Non-equilibrium thermometry in gases and plasmas using hybrid CARS

Arthur Dogariu

Texas A&M University (TAMU), USA