Compact, CO2-stabilized tuneable laser at 2.05 microns
Philip G. Westergaard (1), Jan W. Thomsen (2), Martin R. Henriksen, (2), Mattia Michieletto (3), Marco Triches (1), Jens K. Lyngs{\o} (3), Jan, Hald (1) ((1) Danish Fundamental Metrology, Lyngby, Denmark, (2) Niels Bohr, Institute, Copenhagen, Denmark, (3) NKT Photonics A/S
TL;DR
This paper presents a compact fiber laser at 2.05 microns stabilized to a CO2 transition, achieving high accuracy and stability, with tunability around the molecular resonance for potential applications in spectroscopy and sensing.
Contribution
It introduces a novel fiber-based laser system stabilized to CO2 with high accuracy, stability, and tunability, advancing compact laser technology for molecular spectroscopy.
Findings
Frequency accuracy of 5 MHz achieved
Frequency stability noise floor better than 7 kHz
Tunable within +/-200 MHz from resonance
Abstract
We demonstrate a compact fibre-based laser system at 2.05 microns stabilized to a CO2 transition using frequency modulation spectroscopy of a gas-filled hollow-core fibre. The laser exhibits an absolute frequency accuracy of 5 MHz, a frequency stability noise floor of better than 7 kHz or 5e-11 and is tunable within +/-200 MHz from the molecular resonance frequency while retaining roughly this stability and accuracy.
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