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Photo-Writable Sulfide Glasses Used to Fabricate Core-Clad Fiber Doped with $Pr^{3+}$ for Mid-IR Luminescence
| Content Provider | MDPI |
|---|---|
| Author | Catherine, Boussard-Plédel Carcreff, Julie Nazabal, Virginie Troles, Johann Masselin, Pascal Starecki, Florent Braud, Alain Camy, Patrice Coq, David Le |
| Copyright Year | 2022 |
| Description | 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 ∆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. |
| Starting Page | 549 |
| e-ISSN | 23046732 |
| DOI | 10.3390/photonics9080549 |
| Journal | Photonics |
| Issue Number | 8 |
| Volume Number | 9 |
| Language | English |
| Publisher | MDPI |
| Publisher Date | 2022-08-05 |
| Access Restriction | Open |
| Subject Keyword | Photonics Manufacturing Engineering Step Index Sulfide Fiber Pr3+ Doped Chalcogenide Glass ∆n Modification By Femtosecond Laser |
| Content Type | Text |
| Resource Type | Article |
