Abstract

We report on a novel ytterbium-doped fiber design that combines the advantages of rod and fiber gain media. The fiber design has outer dimensions of a rod laser, meaning a diameter in the range of a few millimeters and a length of just a few tens of centimeters, and includes two important waveguide structures, one for pump radiation and one for laser radiation. We obtained 120-W output power in single-mode beam quality from a 48-cm-long fiber cane that corresponds to an extracted power of 250 W/m. The fiber has significantly reduced nonlinearity, which therefore allows for scalability in the performance of a high-peak-power fiber laser and amplifier system.

© 2005 Optical Society of America

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References

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  1. Y. Jeong, J. K. Sahu, D. Payne, and J. Nilsson, “Ytterbium-doped large-core fiber laser with 1 kW cw output power,” in Advanced Solid-State Photonics, G. J. Quarles, ed., Vol. 94 of OSA Trends in Optics and Photonics Series (Optical Society of America, Washington, D.C., 2004), postdeadline paper PD1
  2. C.-H. Liu, A. Galvanauskas, B. Ehlers, S. Heinemann, A. Carter, K. Tankala, and J. Farroni “810-W single-transverse mode Yb-doped fiber laser,” in Advanced Solid-State Photonics, G. J. Quarles, ed., Vol. 94 of OSA Trends in Optics and Photonics Series (Optical Society of America, Washington, D.C., 2004), postdeadline paper PD2.
  3. A. Liem, J. Limpert, H. Zellmer, A. Tünnermann, V. Reichel, K. Mörl, S. Jetschke, S. Unger, H.-R. Müller, J. Kirchhoff, T. Sandrock, and A. Harschak “1.3 kW Yb-doped fiber laser with excellent beam quality,” in Conference on Lasers and Electro-Optics (Optical Society of America, Washington, D.C., 2004), postdeadline paper CPDD2
  4. G. P. Agrawal, Nonlinear Fiber Optics (Academic, San Diego, Calif., 1995)
  5. E. Snitzer, H. Po, F. Hakimi, R. Tumminelli, and B.C. McCollum, “Double clad, offset core Nd fiber laser,” in Optical Fiber Sensors, Vol. 2 of 1988 OSA Technical Digest Series (Optical Society of America, Washington, D.C., 1988), paper PD5
  6. J. Limpert, T. Schreiber, S. Nolte, H. Zellmer, T. Tünnermann, R. Iliew, F. Lederer, J. Broeng, G. Vienne, A. Petersson, and C. Jakobsen, "High-power air-clad large-mode-area photonic crystal fiber laser," Opt. Express 11, 818–823 (2003), <a href="http://www.opticsexpress.org/abstract.cfm?URI=OPEX-11-7-818">http://www.opticsexpress.org/abstract.cfm?URI=OPEX-11-7-818</a>
    [CrossRef] [PubMed]
  7. A. Bjarklev, J. Broeng, and A. S. Bjarklev, Photonic Crystal Fibres (Kluwer Academic, Dordrecht, The Netherlands, 2003)
    [CrossRef]
  8. P. Russell, “Photonic crystal fibers,” Science 299, 358–362 (2003)
    [CrossRef] [PubMed]
  9. J. Limpert, A. Liem, M. Reich, T. Schreiber, S. Nolte, H. Zellmer, A. Tünnermann, J. Broeng, A. Petersson, and C. Jakobsen, "Low-nonlinearity single-transverse-mode ytterbium-doped photonic crystal fiber amplifier," Opt. Express 12, 1313–1319 (2004), <a href="http://www.opticsexpress.org/abstract.cfm?URI=OPEX-12-7-1313">http://www.opticsexpress.org/abstract.cfm?URI=OPEX-12-7-1313</a>
    [CrossRef] [PubMed]
  10. J. Limpert, T. Schreiber, A. Liem, S. Nolte, H. Zellmer, T. Peschel, V. Guyenot, and A. Tünnermann, "Thermo-optical properties of air-clad photonic crystal fiber lasers in high power operation," Opt. Express 11, 2982–2990 (2003), <a href="http://www.opticsexpress.org/abstract.cfm?URI=OPEX-11-22-2982">http://www.opticsexpress.org/abstract.cfm?URI=OPEX-11-22-2982</a>
    [CrossRef] [PubMed]

Advanced Solid-State Photonics (2)

Y. Jeong, J. K. Sahu, D. Payne, and J. Nilsson, “Ytterbium-doped large-core fiber laser with 1 kW cw output power,” in Advanced Solid-State Photonics, G. J. Quarles, ed., Vol. 94 of OSA Trends in Optics and Photonics Series (Optical Society of America, Washington, D.C., 2004), postdeadline paper PD1

C.-H. Liu, A. Galvanauskas, B. Ehlers, S. Heinemann, A. Carter, K. Tankala, and J. Farroni “810-W single-transverse mode Yb-doped fiber laser,” in Advanced Solid-State Photonics, G. J. Quarles, ed., Vol. 94 of OSA Trends in Optics and Photonics Series (Optical Society of America, Washington, D.C., 2004), postdeadline paper PD2.

Conference on Lasers and Electro-Optics (1)

A. Liem, J. Limpert, H. Zellmer, A. Tünnermann, V. Reichel, K. Mörl, S. Jetschke, S. Unger, H.-R. Müller, J. Kirchhoff, T. Sandrock, and A. Harschak “1.3 kW Yb-doped fiber laser with excellent beam quality,” in Conference on Lasers and Electro-Optics (Optical Society of America, Washington, D.C., 2004), postdeadline paper CPDD2

Opt. Express (3)

Optical Fiber Sensors (1)

E. Snitzer, H. Po, F. Hakimi, R. Tumminelli, and B.C. McCollum, “Double clad, offset core Nd fiber laser,” in Optical Fiber Sensors, Vol. 2 of 1988 OSA Technical Digest Series (Optical Society of America, Washington, D.C., 1988), paper PD5

Science (1)

P. Russell, “Photonic crystal fibers,” Science 299, 358–362 (2003)
[CrossRef] [PubMed]

Other (2)

A. Bjarklev, J. Broeng, and A. S. Bjarklev, Photonic Crystal Fibres (Kluwer Academic, Dordrecht, The Netherlands, 2003)
[CrossRef]

G. P. Agrawal, Nonlinear Fiber Optics (Academic, San Diego, Calif., 1995)

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Figures (4)

Fig. 1.
Fig. 1.

(a) Microscope image of a rod-type photonic crystal fiber and (b) close up of the inner cladding and core regions.

Fig. 2.
Fig. 2.

Experimental setup of a short-length high-power fiber laser.

Fig. 3.
Fig. 3.

Output characteristics of a rod-type fiber laser.

Fig. 4.
Fig. 4.

Emission spectrum of a short-length high-power fiber laser.

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