Large Mode Area All-Solid Optical Fiber Lasers with Tailored Microstructured Cladding
Titel:
Large Mode Area All-Solid Optical Fiber Lasers with Tailored Microstructured Cladding
Auteur:
Roy, Ph. Fevrier, S. Lavoute, L. Gaponov, D. Jamier, R. Lecaplain, C. Martel, G. Hideur, A. Likhachev, M. E. Bubnov, M. M. Dianov, E. M. Salganskii, M. Yu. Khopin, V. F. Yashkov, M. Yu. Guryanov, A. N. Schuster, K. Kobelke, J. Grimm, S.
Verschenen in:
Fiber & integrated optics
Paginering:
Jaargang 27 (2008) nr. 5 pagina's 440-452
Jaar:
2008-09
Inhoud:
Improvements, in terms of output power, spatial beam quality, bend insensitivity … are still required in the field of single-mode fiber lasers. A major trend is to increase the active core area to increase the thresholds of nonlinear effects while ensuring a transverse single-mode 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, a large mode area photonic bandgap fiber is shown to lead to a transverse single-mode fiber laser with very good lasing efficiency. On the other hand, it is demonstrated that surrounding a highly multimode active core by a properly designed microstructured cladding allows the fiber laser to be operated in the single-mode regime.