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- Title
Numerical Modeling of Mid-IR Lasers Based on Tb-Doped Chalcogenide Multicore Fibers.
- Authors
Salnikov, Nikolay I.; Andrianov, Alexey V.; Anashkina, Elena A.
- Abstract
Mid-IR fiber lasers operating at wavelengths near 5 μm are of great interest for many fundamental and industrial applications, but only a few experimental samples based on active chalcogenide fibers have been demonstrated so far. One of the limitations of the power of such lasers may be a fairly low fiber damage threshold. To solve this problem, we developed and numerically investigated in detail a mid-IR fiber laser at 5.3 µm with multi-W output power pumped into the cladding at a wavelength of 2 µm. We proposed using a Tb-doped chalcogenide multicore fiber with 25 single-mode cores arranged in a 5 × 5 square lattice as an active medium. The proposed laser design surpasses the power limit of single-core chalcogenide fibers. When simulating lasers, we specified realistic parameters of Tb-doped chalcogenide glass based on published experimental data. We performed a comprehensive theoretical analysis, studied the influence of various factors on the characteristics of generation, and found optimal system parameters and expected generation parameters.
- Subjects
ACTIVE medium; SINGLE-mode optical fibers; CHALCOGENIDES; LASERS; CHALCOGENIDE glass; FIBER lasers; SUPERCONTINUUM generation
- Publication
Fibers, 2024, Vol 12, Issue 3, p25
- ISSN
2079-6439
- Publication type
Article
- DOI
10.3390/fib12030025