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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 37, Iss. 36 — Dec. 20, 1998
  • pp: 8434–8437

Short-Length 10-W cw Neodymium-Doped M-Profile Fiber Laser

Peter Glas, Martin Naumann, André Schirrmacher, Sonja Unger, and Thomas Pertsch  »View Author Affiliations


Applied Optics, Vol. 37, Issue 36, pp. 8434-8437 (1998)
http://dx.doi.org/10.1364/AO.37.008434


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Abstract

A comparative analysis of the mode field distributions of the pump radiation in a double-clad fiber laser and in an <i>M</i>-profile fiber laser shows the superiority of the latter design with respect to absorption efficiency. This efficiency is accurately modeled by the modal analysis, allowing the description of the lasing field within the same model. Based on this approach, the optimization of the recently invented <i>M</i>-profile fiber laser was carried out, leading to an output power of nearly 10 W at λ = 1050 nm with a slope efficiency of 54% utilizing a fiber length of 190 cm.

© 1998 Optical Society of America

OCIS Codes
(060.2280) Fiber optics and optical communications : Fiber design and fabrication
(060.2320) Fiber optics and optical communications : Fiber optics amplifiers and oscillators
(060.2380) Fiber optics and optical communications : Fiber optics sources and detectors
(060.2400) Fiber optics and optical communications : Fiber properties
(060.2420) Fiber optics and optical communications : Fibers, polarization-maintaining

Citation
Peter Glas, Martin Naumann, André Schirrmacher, Sonja Unger, and Thomas Pertsch, "Short-Length 10-W cw Neodymium-Doped M-Profile Fiber Laser," Appl. Opt. 37, 8434-8437 (1998)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-37-36-8434


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References

  1. P. Glas, M. Naumann, and A. Schirrmacher, “A novel design for high brightness fiber lasers pumped by high power diodes,” J. Mod. Opt. 43, 879–887 (1996).
  2. L. Zenteno, “High-power double-clad fiber lasers,” J. Lightwave Technol. 11, 1435–1446 (1993).
  3. H. Zellmer, U. Willamowski, A. Tünnermann, H. Welling, S. Unger, V. Reichel, H.-R. Müller, J. Kirchhof, and P. Albers, “High-power cw neodymium-doped fiber laser operating at 9.2 W with high beam quality,” Opt. Lett. 20, 578–580 (1995).
  4. H. Po, J. D. Cao, B. M. Laliberte, R. A. Minns, R. F. Robinson, B. H. Rockney, R. R. Tricca, and Y. H. Zang, “High power neodymium-doped single transverse mode fibre laser,” Electron. Lett. 9(17), 1500–1501 (1993).
  5. A. Liu and K. Ueda, “The absorption characteristics of circular, offset, and rectangular double clad fibers,” Opt. Commun. 132, 511–518 (1996).
  6. R. Boneß and D. Tolksdorf, “Numerische Verfahren zur Berechnung der Feldstaerke in Gradientenlichtwellenleitern,” Nachrichtentech. Elektron. 36, 37–38 (1986).
  7. A. Snyder and J. Love, Optical Waveguide Theory (Chapman & Hall, London, 1983).
  8. P. Glas, M. Naumann, A. Schirrmacher, S. Unger, and Th. Pertsch, “A high power neodymium doped fiber laser using a novel fiber geometry,” Opt. Commun. 141, 336–342 (1997).
  9. The diode laser module was fabricated by the Fraunhofer Institute, Aachen, Germany.

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