Frequency modulation Fourier transform spectroscopy
Julien Mandon (PPM), Guy Guelachvili (PPM), Nathalie Picqu\'e (PPM)
TL;DR
The paper introduces FM-FTS, a novel spectroscopy technique that combines frequency modulation heterodyne and Fourier transform methods for broadband, sensitive absorption and dispersion measurements, demonstrated on C2H2 overtone spectra.
Contribution
It presents a new combined spectroscopy method, FM-FTS, enabling simultaneous broadband measurement of absorption and dispersion with high sensitivity.
Findings
Successful experimental demonstration on C2H2 spectrum
Achieved broadband spectral coverage with high sensitivity
Simultaneous measurement of absorption and dispersion profiles
Abstract
A new method, FM-FTS, combining Frequency Modulation heterodyne laser spectroscopy and Fourier Transform Spectroscopy is presented. It provides simultaneous sensitive measurement of absorption and dispersion profiles with broadband spectral coverage capabilities. Experimental demonstration is made on the overtone spectrum of C2H2 in the 1.5 m region.
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Taxonomy
TopicsSpectroscopy and Laser Applications · Atmospheric Ozone and Climate · Laser Design and Applications