Fabrication and characterization of iodine photonic microcell for sub-Doppler spectroscopy and laser stabilization - Université de Limoges Accéder directement au contenu
Pré-Publication, Document De Travail (Preprint/Prepublication) Année : 2023

Fabrication and characterization of iodine photonic microcell for sub-Doppler spectroscopy and laser stabilization

Résumé

We report on the development of all-fiber stand-alone Iodine-filled Photonic Microcells demonstrating record absorption contrast at room temperature. The microcell's fiber is made of inhibited coupling guiding hollow-core photonic crystal fibers. The fiber-core loading with Iodine was undertaken at 10-1-10-2 mbar vapor pressure using a novel gas-manifold based on metallic vacuum parts with ceramic coated inner surfaces for corrosion resistance. The fiber is then sealed on the tips and mounted on FC/APC connectors for better integration with standard fiber components. The stand-alone microcells display Doppler lines with contrasts up to 73% in the 633nm wavelength range, and an insertion loss between 3 to 4dB. Sub-Doppler spectroscopy based on saturable absorption has been carried out to resolve the hyperfine structure of the P(33)6-3 lines at room temperature with a full-width at half maximum of 24MHz on the b4 component with the help of lock-in amplification. Also, we demonstrate distinguishable hyperfine components on the R(39)6-3 line at room temperature without any recourse to signal-to-noise ratio amplification techniques.
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Dates et versions

hal-03946315 , version 1 (02-03-2023)

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Clément Goïcoechéa, Thomas Billotte, Matthieu Chafer, Martin Maurel, Jenny Jouin, et al.. Fabrication and characterization of iodine photonic microcell for sub-Doppler spectroscopy and laser stabilization. 2023. ⟨hal-03946315⟩
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