Super Resolution Spectroscopy For THz-TDS:Application To Gas Spectroscopy

Paper (Chem 2)

Thu, 12 Nov 2020 06:15pm to 06:30pm

Room: Olmstead

Attend in Zoom

Time Domain Spectroscopy resolution is usually limited by the Fourier Heisenberg criteria (FHC) coming from the length of the delay line. We will present a method to exploit THz-TDS spectra providing a ~ 10-fold resolution improvement reaching ~120 MHz for width measurements. These results were obtained by modeling and the implementation of a constraint reconstruction algorithm. We tested the methods on temporal traces from gaseous NH3 and were in very good agreement with the values from literature down to a pressure of 5 mbar.

Presenters and Authors Info

Presenter: Anonymous

Authors: Eliet, Sophie; Mouelhi, Meriem; Cuisset, Arnaud; Hindle, Francis; Lampin, Jean Francois; Peretti, Romain

IEMN/CNRS, Laboratoire de Physico-Chimie de l'Atmosphère, Université du Littoral Côte d'Opale