Mid-infrared supercontinuum-based Fourier transform spectroscopy for plasma analysis.

ABSTRACT: Broadband mid-infrared (MIR) spectroscopy is a well-established and valuable diagnostic technique for reactive plasmas. Plasmas are complex systems and consist of numerous (reactive) types of molecules; it is challenging to measure and control reaction specificity with a good sensitivity. Here, we demonstrate the first use of a novel MIR supercontinuum (SC) source for quantitative plasma spectroscopy. The SC source has a wide spectral coverage of 1300-2700 cm^-1 (wavelength range 3.7-7.7 μm), thus enabling broadband multispecies detection. The high spatial coherence of the MIR SC source provides long interaction path lengths, thereby increasing the sensitivity for molecular species. The combination of such a SC source with a custom-built FTIR spectrometer (0.1 cm^-1 spe

SUBMITTER: Krebbers R 

PROVIDER: S-EPMC9187747 | biostudies-literature | 2022 Jun

REPOSITORIES: biostudies-literature