Resolved rotation-vibration non-equilibrium with rotational VIPA-CARS.

Autor: Steinmetz SA, Chen TY, Goldberg BM, Limbach CM, Kliewer CJ
Jazyk: angličtina
Zdroj: Optics letters [Opt Lett] 2022 Oct 15; Vol. 47 (20), pp. 5429-5432.
DOI: 10.1364/OL.474037
Abstrakt: Simultaneous rotational and vibrational temperatures are measured in an N 2 plasma with rotational coherent anti-Stokes Raman scattering (CARS) resolved with a virtually imaged phased array (VIPA)-based spectrometer. A VIPA spectrally separates rotational transitions for each vibrational state, allowing vibrational populations to be directly measured. VIPA-CARS is shown to provide more accurate measurements of non-equilibrium temperatures than grating-resolved rotational CARS. The general characteristics, limitations, and potential uses of VIPA-CARS are discussed.
Databáze: MEDLINE