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- Title
Photo-Writable Sulfide Glasses Used to Fabricate Core-Clad Fiber Doped with Pr 3+ for Mid-IR Luminescence.
- Authors
Carcreff, Julie; Nazabal, Virginie; Troles, Johann; Boussard-Plédel, Catherine; Masselin, Pascal; Starecki, Florent; Braud, Alain; Camy, Patrice; Le Coq, David
- Abstract
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 Pr3+ has been fabricated. The compositions of the core and the clad were selected to ensure the positive ∆n by adding CdI2 and CsCl, respectively, in the GeS2-Ga2S3 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 Pr3+ 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.
- Subjects
MILITARY communications; BRAGG gratings; FEMTOSECOND lasers; SULFIDES; LUMINESCENCE; FIBERS; PLATINUM group; RARE earth metal alloys
- Publication
Photonics, 2022, Vol 9, Issue 8, p549
- ISSN
2304-6732
- Publication type
Article
- DOI
10.3390/photonics9080549