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arXiv · 2405.17962

Detection of carbon monoxide using a polarization-multiplexed erbium dual-comb fiber laser

P. E. Collin Aldia·Jiayang Chen·Jonas K. C. Ballentin·Lukas W. Perner·O. H. Heckl
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Abstract

We present a compact, reliable, and robust free-running all-polarization-maintaining erbium (Er) single-cavity dual-comb laser generated via polarization multiplexing with gain sharing. Polarization multiplexing exploits the fast and slow axes of the fiber, while modelocking is achieved through a nonlinear amplifying loop mirror scheme using readily available components. The laser operates at a repetition rate of around 74.74 MHz with a tuning capability in the difference in repetition rates from 500 Hz to 200 kHz. This tunability makes the system more flexible for dual-comb spectroscopy experiments. Consequently, using this laser, we demonstrated a proof-of-principle dual-comb spectroscopy of carbon monoxide (CO), operating without any active stabilization.

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P. E. Collin Aldia, Jiayang Chen, Jonas K. C. Ballentin, Lukas W. Perner, O. H. Heckl. 2024-05-28. Detection of carbon monoxide using a polarization-multiplexed erbium dual-comb fiber laser. https://doi.org/10.1088/2515-7647%2Fad819f

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