https://doi.org/10.1051/epjconf/202328707002
Dual-comb spectrometer in the two-micron region using a new design of dispersion-controlled highly nonlinear fibre
1 ICB, Université de Bourgogne, CNRS UMR 6003, F-21078 Dijon, France
2 Laboratoire Temps-Fréquence, Institut de Physique, Université de Neuchâtel, Avenue de Bellevaux 51, 2000 Neuchâtel, Switzerland
3 Université de Limoges, CNRS, XLIM, UMR 7552, F-87000 Limoges, France
4 Univ. Côte d’Azur, CNRS, Institut de Physique de Nice, F-06108 Nice Cedex 2, France
5 CELIA, Centre Laser Intenses et Applications, Université de Bordeaux-CNRS-CEA, UMR 5107, F-33405 Talence Cedex France
6 Institut Universitaire de France (IUF), 1 rue Descartes, Paris, France
* Corresponding author: alix.malfondet@u-bourgogne.fr
Published online: 18 October 2023
We present here an experimental demonstration of dual-comb spectroscopy performed around 2 µm, with the use of a new design of dispersion-controlled highly nonlinear fibre. The latter allows us to efficiently convert light via a four-wave mixing process from 1.55 µm to 2 µm, which is a spectral region suited for the detection of pollutants such as CO2 or N2O. Experimental measurements have been performed with these two molecules and show an excellent agreement with the HITRAN database.
© The Authors, published by EDP Sciences, 2023
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
