Complex refractive indices in the TeraHertz domain of samples from atmospheric aerosol sources - Archive ouverte HAL
Conference Papers Year : 2021

Complex refractive indices in the TeraHertz domain of samples from atmospheric aerosol sources

Jeyan Bichon

Abstract

We report the TeraHertz (THz) characterization of calcium carbonate (CaCO3) particles, one of the major components of desert dust, to determine the real and imaginary parts of their complex refractive indices. The optical characterization is done by TeraHertz Time Domain Spectroscopy (THz-TDS) technique. CaCO3 powders are diluted with High Density PolyEthylene (PE) at different concentrations (0.1% to 75% of CaCO3) and compressed in pellets. Time-traces are then fitted using the Fit@TDS algorithm developed by Photonic TeraHertz group members, and the complex refractive indices are extracted. We support the optical characterization by a morphological characterization by Scanning Electron Microscopy-Energy Dispersive X-Ray (SEM-EDX) analysis after resuspension of particles and filtration on a polycarbonate 0.2 µm pore filter.
Fichier principal
Vignette du fichier
Final IRMMW 2021-jeyan.pdf (461.72 Ko) Télécharger le fichier
Origin Files produced by the author(s)

Dates and versions

hal-03403999 , version 1 (28-10-2021)

Identifiers

Cite

Jeyan Bichon, Melanie Lavancier, Denis Petitprez, Alexandre Deguine, D. Hourlier-Bahloul, et al.. Complex refractive indices in the TeraHertz domain of samples from atmospheric aerosol sources. 2021 46th International Conference on Infrared, Millimeter and Terahertz Waves (IRMMW-THz), Aug 2021, Chengdu, China. pp.1163, ⟨10.1109/irmmw-thz50926.2021.9566988⟩. ⟨hal-03403999⟩
201 View
182 Download

Altmetric

Share

More