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Article Dans Une Revue Photonics Année : 2022

Photo-writable sulfide glasses used to fabricate core-clad fiber doped with Pr$^{3+}$ for Mid-IR luminescence

Résumé

With the ultimate goal of developing rare-earth doped chalcogenide fiber fabrication for sensing, amplification, and laser applications, a core/clad germanium-gallium sulfide fiber doped with Pr$^{3+}$ has been fabricated. The compositions of the core and the clad were selected to ensure the positive $\Delta$n by adding CdI$_2$ and CsCl, respectively, in the GeS$_2$-Ga$_2$S$_3$ matrix. The choice of these compositions was also justified from experimental parameters, including characteristic temperatures and viscosity. Moreover, the permanent photo writability of the sulfide glass family by a femtosecond laser is investigated from the perspective of Bragg grating photo-inscription. Structural investigations by Raman spectroscopy are presented and the effect of the Pr$^{3+}$ rare-earth ion on the structure is underlined. Finally, the emission of the step-index fiber, made by the rod-in-tube technique between 3.1 µm and 5.5 µm (by pumping at 1.55 µm), is demonstrated.
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hal-03769080 , version 1 (05-09-2022)

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Julie Carcreff, Virginie Nazabal, Johann Troles, Catherine Boussard-Plédel, Pascal Masselin, et al.. Photo-writable sulfide glasses used to fabricate core-clad fiber doped with Pr$^{3+}$ for Mid-IR luminescence. Photonics, 2022, 9 (8), pp.549. ⟨10.3390/photonics9080549⟩. ⟨hal-03769080⟩
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