| Issue |
EPJ Web Conf.
Volume 287, 2023
EOS Annual Meeting (EOSAM 2023)
|
|
|---|---|---|
| Article Number | 07022 | |
| Number of page(s) | 2 | |
| Section | Topical Meeting (TOM) 7- Optical Frequency Combs | |
| DOI | https://doi.org/10.1051/epjconf/202328707022 | |
| Published online | 18 October 2023 | |
https://doi.org/10.1051/epjconf/202328707022
Coherent averaging quantum cascade laser based dual-comb spectrometer with near infrared light illumination control
1 Laboratoire Temps-Fréquence, Institut de Physique, Université de Neuchâtel, Avenue de Bellevaux 51, 2000 Neuchâtel, Switzerland
2 Institute for Quantum Electronics, ETH Zurich, Auguste-Piccard-Hof 1, 8093 Zurich, Switzerland
* e-mail: alexandre.parriaux@unine.ch
Published online: 18 October 2023
We present a dual-comb spectrometer based on quantum cascade lasers operating at 7.7 µm with a stabilization scheme that enables coherent averaging. We show that by illuminating a low cost near-infrared light source of the front facet of the quantum cascade laser, we can tightly lock one comb line of the dual-comb spectrum, resulting in narrow linewidth with sub-radian integrated phase noise for all RF comb lines.
© The Authors, published by EDP Sciences, 2023
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