9 May 2008 Ytterbium-doped fibre lasers with tailored all-solid microstructured cladding
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Although singlemode fiber lasers become a mature technology, enhancements, in terms of output power, spatial beam quality, bend insensitivity are still required. A major trend is to increase the active core area to increase the thresholds of nonlinear effects while ensuring a transverse singlemode behavior. Actually, increasing the active ions' concentration is also demanded since it allows a drastic reduction of the fiber length, everything being equal. Two non-exclusive strategies are laid out to overcome fiber laser limitations. On the one hand, it is demonstrated that surrounding a highly multimode active core by a properly designed microstructured cladding, exhibiting specific resonant features, allows the fiber laser to be operated in the singlemode regime. On the other hand, a large mode area photonic bandgap fibre is shown to lead to a transverse singlemode fiber laser with very good lasing efficiency.
© (2008) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
S. Février, L. Lavoute, D. Gaponov, M. Devautour, Ph. Roy, R. Jamier, K. Schüster, J. Kobelke, S. Grimm, S. L. Semjonov, M. E. Likhachev, M. M. Bubnov, E. M. Dianov, Mikhail Yu. Yashkov, V. F. Khopin, M. Y. Salganskii, and A. N. Guryanov "Ytterbium-doped fibre lasers with tailored all-solid microstructured cladding", Proc. SPIE 6990, Photonic Crystal Fibers II, 69900M (9 May 2008); doi: 10.1117/12.781313; https://doi.org/10.1117/12.781313


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