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- Title
Optimization of the Core Compound for Ytterbium Ultra-Short Cavity Fiber Lasers.
- Authors
Rybaltovsky, Andrey; Yashkov, Mikhail; Abramov, Alexey; Umnikov, Andrey; Likhachev, Mikhail; Lipatov, Denis
- Abstract
Highly ytterbium-, aluminum- and phosphorus-co-doped silica fibers with low optical losses were fabricated by the MCVD method, utilizing an all-gas-phase deposition technique. Optical and laser properties of the active fibers with a phosphosilicate and aluminophosphosilicate glass cores doped with 1.85 mol% and 1.27 mol% Yb2O3 were thoroughly investigated. With the help of hydrogen loading, it was possible to induce highly reflective Bragg grating in both fiber samples using the standard phase-mask technique and 193 nm-UV laser irradiation. The ultra-short (less than 2 cm long) Fabry–Perot laser cavities were fabricated by inscribing two fiber Bragg gratings (highly and partially reflective FBGs) directly in the core of the fiber samples. The highest pump-to-signal conversion efficiency of 47% was demonstrated in such laser configuration using phosphosilicate fiber. The reasons for the low efficiency of aluminophosphosilicate fiber are discussed.
- Subjects
FIBER lasers; BRAGG gratings; YTTERBIUM compounds; FABRY-Perot lasers; FIBER Bragg gratings; SILICA fibers; OPTICAL properties
- Publication
Fibers, 2023, Vol 11, Issue 6, p52
- ISSN
2079-6439
- Publication type
Article
- DOI
10.3390/fib11060052