| Issue |
EPJ Web Conf.
Volume 287, 2023
EOS Annual Meeting (EOSAM 2023)
|
|
|---|---|---|
| Article Number | 07019 | |
| Number of page(s) | 2 | |
| Section | Topical Meeting (TOM) 7- Optical Frequency Combs | |
| DOI | https://doi.org/10.1051/epjconf/202328707019 | |
| Published online | 18 October 2023 | |
https://doi.org/10.1051/epjconf/202328707019
Feasibility of dual comb spectroscopy in the UV range using a free-running, bidirectional ring titanium sapphire laser
Université de Lyon, Université Claude Bernard Lyon 1, CNRS, Institut Lumière Matière, 69622 Villeurbanne, France
* Corresponding author: abel.feuvrier@univ-lyon1.fr
Published online: 18 October 2023
We show that our developed free-running, bidirectional ring Ti:Sa laser cavity meets the requirements for Dual Comb Spectroscopy in the UV range (UV-DCS). Two counter-propagative frequency combs with slightly different repetition rate are generated in such a cavity and we show quantitatively that this repetition rate difference can be explained by the self-steepening effect. Molecular absorption lines of the O2 A-band centered around 760~nm are measured with a 1,5 GHz spectral resolution, demonstrating that the mutual coherence of the two combs allows GHz-resolution DCS measurements. Moreover, we demonstrate that the generated output peak power allows for efficient second harmonic generation (SHG), in the scope of developing laboratory and open-path UV-DCS experiments.
© The Authors, published by EDP Sciences, 2023
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