Abstract

A method for axially symmetric fiber side pumping is proposed. The method is based on a coupling structure and a pump source that both utilize the axially symmetric geometry of a typical optical fiber. The coupling structure can be manufactured by adding material to and/or by removing material from the fiber. In principle, the method enables the launch of kilowatt-level pump power into the fiber through a single coupling structure. The conditions for successful coupling and a simple experimental verification of the method are presented. In the experiments over 90 % of the launched light fell inside the coupling area and the potential for efficient coupling into a double clad fiber was demonstrated.

© 2006 Optical Society of America

Full Article  |  PDF Article

References

  • View by:
  • |
  • |
  • |

  1. A. Liem, J. Limpert, H. Zellmer, A. Tünnermann, V. Reichel, K. Mörl, S. Jetschke, S. Unger, H. Müller, J. Kirchhof, T. Sandrock, and A. Harschak, "1.3 kW Yb-doped fiber laser with excellent beam quality," presented at CLEO/IQEC 2004, San Francisco, USA, 16-21 May 2004.
  2. Y. Jeong, J. Sahu, D. Payne, and J. Nilsson, "Ytterbium-doped large-core fiber laser with 1.36 kW continuous-wave output power," Opt. Express 12, 6088-6092 (2004).
    [CrossRef] [PubMed]
  3. L. Goldberg, "Method and apparatus for side pumping an optical fiber," U.S. Patent No. 5,854,865 (29 Dec. 1998).
  4. V. Gapontsev, and I. Samartsev, "Coupling arrangement between a multi-mode light source and an optical fiber through an intermediate optical fiber length," U.S. Patent No. 5,999,673 (7 Dec. 1999).
  5. J. Koplow, S. Moore, and D. Kliner, "A new method for side pumping of double-clad fiber sources," IEEE J. Quantum Electron. 39, 529-540 (2003).
    [CrossRef]
  6. R. Herda, A. Liem, B. Schnabel, A. Drauschke, H. Fuchs, E. Kley, H. Zellmer, and A. Tünnermann, "Efficient side-pumping of fibre lasers using binary gold diffraction gratings," Electron. Lett. 39, 276-277 (2003).
    [CrossRef]
  7. D. Kouznetsov, and J. Moloney, "Slab delivery of incoherent pump light to double-clad fiber amplifiers: an analytic approach," IEEE J. Quantum Electron. 40, 378-383 (2004).
    [CrossRef]
  8. T. Alahautala, E. Lassila, and R. Hernberg, "High power density beam from narrow diode-laser arrays in axial symmetry," Appl. Opt. 43, 2760-2766 (2004).
    [CrossRef] [PubMed]
  9. E. Lassila, and R. Hernberg, "Bright diode laser light source," Appl. Opt. 45, 3548-3552 (2006).
    [CrossRef] [PubMed]
  10. Y. Wang, C. Xu, and H. Po, "Thermal effects in kilowatt fiber lasers," IEEE Photonics Technol. Lett. 16, 63-65 (2004).
    [CrossRef]
  11. Y. Wang, "Heat dissipation in kilowatt fiber power amplifiers," IEEE J. Quantum Electron. 40, 731-740 (2004).
    [CrossRef]

2006 (1)

2004 (5)

Y. Wang, C. Xu, and H. Po, "Thermal effects in kilowatt fiber lasers," IEEE Photonics Technol. Lett. 16, 63-65 (2004).
[CrossRef]

Y. Wang, "Heat dissipation in kilowatt fiber power amplifiers," IEEE J. Quantum Electron. 40, 731-740 (2004).
[CrossRef]

Y. Jeong, J. Sahu, D. Payne, and J. Nilsson, "Ytterbium-doped large-core fiber laser with 1.36 kW continuous-wave output power," Opt. Express 12, 6088-6092 (2004).
[CrossRef] [PubMed]

D. Kouznetsov, and J. Moloney, "Slab delivery of incoherent pump light to double-clad fiber amplifiers: an analytic approach," IEEE J. Quantum Electron. 40, 378-383 (2004).
[CrossRef]

T. Alahautala, E. Lassila, and R. Hernberg, "High power density beam from narrow diode-laser arrays in axial symmetry," Appl. Opt. 43, 2760-2766 (2004).
[CrossRef] [PubMed]

2003 (2)

J. Koplow, S. Moore, and D. Kliner, "A new method for side pumping of double-clad fiber sources," IEEE J. Quantum Electron. 39, 529-540 (2003).
[CrossRef]

R. Herda, A. Liem, B. Schnabel, A. Drauschke, H. Fuchs, E. Kley, H. Zellmer, and A. Tünnermann, "Efficient side-pumping of fibre lasers using binary gold diffraction gratings," Electron. Lett. 39, 276-277 (2003).
[CrossRef]

Alahautala, T.

Drauschke, A.

R. Herda, A. Liem, B. Schnabel, A. Drauschke, H. Fuchs, E. Kley, H. Zellmer, and A. Tünnermann, "Efficient side-pumping of fibre lasers using binary gold diffraction gratings," Electron. Lett. 39, 276-277 (2003).
[CrossRef]

Fuchs, H.

R. Herda, A. Liem, B. Schnabel, A. Drauschke, H. Fuchs, E. Kley, H. Zellmer, and A. Tünnermann, "Efficient side-pumping of fibre lasers using binary gold diffraction gratings," Electron. Lett. 39, 276-277 (2003).
[CrossRef]

Herda, R.

R. Herda, A. Liem, B. Schnabel, A. Drauschke, H. Fuchs, E. Kley, H. Zellmer, and A. Tünnermann, "Efficient side-pumping of fibre lasers using binary gold diffraction gratings," Electron. Lett. 39, 276-277 (2003).
[CrossRef]

Hernberg, R.

Jeong, Y.

Kley, E.

R. Herda, A. Liem, B. Schnabel, A. Drauschke, H. Fuchs, E. Kley, H. Zellmer, and A. Tünnermann, "Efficient side-pumping of fibre lasers using binary gold diffraction gratings," Electron. Lett. 39, 276-277 (2003).
[CrossRef]

Kliner, D.

J. Koplow, S. Moore, and D. Kliner, "A new method for side pumping of double-clad fiber sources," IEEE J. Quantum Electron. 39, 529-540 (2003).
[CrossRef]

Koplow, J.

J. Koplow, S. Moore, and D. Kliner, "A new method for side pumping of double-clad fiber sources," IEEE J. Quantum Electron. 39, 529-540 (2003).
[CrossRef]

Kouznetsov, D.

D. Kouznetsov, and J. Moloney, "Slab delivery of incoherent pump light to double-clad fiber amplifiers: an analytic approach," IEEE J. Quantum Electron. 40, 378-383 (2004).
[CrossRef]

Lassila, E.

Liem, A.

R. Herda, A. Liem, B. Schnabel, A. Drauschke, H. Fuchs, E. Kley, H. Zellmer, and A. Tünnermann, "Efficient side-pumping of fibre lasers using binary gold diffraction gratings," Electron. Lett. 39, 276-277 (2003).
[CrossRef]

Moloney, J.

D. Kouznetsov, and J. Moloney, "Slab delivery of incoherent pump light to double-clad fiber amplifiers: an analytic approach," IEEE J. Quantum Electron. 40, 378-383 (2004).
[CrossRef]

Moore, S.

J. Koplow, S. Moore, and D. Kliner, "A new method for side pumping of double-clad fiber sources," IEEE J. Quantum Electron. 39, 529-540 (2003).
[CrossRef]

Nilsson, J.

Payne, D.

Po, H.

Y. Wang, C. Xu, and H. Po, "Thermal effects in kilowatt fiber lasers," IEEE Photonics Technol. Lett. 16, 63-65 (2004).
[CrossRef]

Sahu, J.

Schnabel, B.

R. Herda, A. Liem, B. Schnabel, A. Drauschke, H. Fuchs, E. Kley, H. Zellmer, and A. Tünnermann, "Efficient side-pumping of fibre lasers using binary gold diffraction gratings," Electron. Lett. 39, 276-277 (2003).
[CrossRef]

Tünnermann, A.

R. Herda, A. Liem, B. Schnabel, A. Drauschke, H. Fuchs, E. Kley, H. Zellmer, and A. Tünnermann, "Efficient side-pumping of fibre lasers using binary gold diffraction gratings," Electron. Lett. 39, 276-277 (2003).
[CrossRef]

Wang, Y.

Y. Wang, "Heat dissipation in kilowatt fiber power amplifiers," IEEE J. Quantum Electron. 40, 731-740 (2004).
[CrossRef]

Y. Wang, C. Xu, and H. Po, "Thermal effects in kilowatt fiber lasers," IEEE Photonics Technol. Lett. 16, 63-65 (2004).
[CrossRef]

Xu, C.

Y. Wang, C. Xu, and H. Po, "Thermal effects in kilowatt fiber lasers," IEEE Photonics Technol. Lett. 16, 63-65 (2004).
[CrossRef]

Zellmer, H.

R. Herda, A. Liem, B. Schnabel, A. Drauschke, H. Fuchs, E. Kley, H. Zellmer, and A. Tünnermann, "Efficient side-pumping of fibre lasers using binary gold diffraction gratings," Electron. Lett. 39, 276-277 (2003).
[CrossRef]

Appl. Opt. (2)

Electron. Lett. (1)

R. Herda, A. Liem, B. Schnabel, A. Drauschke, H. Fuchs, E. Kley, H. Zellmer, and A. Tünnermann, "Efficient side-pumping of fibre lasers using binary gold diffraction gratings," Electron. Lett. 39, 276-277 (2003).
[CrossRef]

IEEE J. Quantum Electron. (3)

D. Kouznetsov, and J. Moloney, "Slab delivery of incoherent pump light to double-clad fiber amplifiers: an analytic approach," IEEE J. Quantum Electron. 40, 378-383 (2004).
[CrossRef]

J. Koplow, S. Moore, and D. Kliner, "A new method for side pumping of double-clad fiber sources," IEEE J. Quantum Electron. 39, 529-540 (2003).
[CrossRef]

Y. Wang, "Heat dissipation in kilowatt fiber power amplifiers," IEEE J. Quantum Electron. 40, 731-740 (2004).
[CrossRef]

IEEE Photonics Technol. Lett. (1)

Y. Wang, C. Xu, and H. Po, "Thermal effects in kilowatt fiber lasers," IEEE Photonics Technol. Lett. 16, 63-65 (2004).
[CrossRef]

Opt. Express (1)

Other (3)

L. Goldberg, "Method and apparatus for side pumping an optical fiber," U.S. Patent No. 5,854,865 (29 Dec. 1998).

V. Gapontsev, and I. Samartsev, "Coupling arrangement between a multi-mode light source and an optical fiber through an intermediate optical fiber length," U.S. Patent No. 5,999,673 (7 Dec. 1999).

A. Liem, J. Limpert, H. Zellmer, A. Tünnermann, V. Reichel, K. Mörl, S. Jetschke, S. Unger, H. Müller, J. Kirchhof, T. Sandrock, and A. Harschak, "1.3 kW Yb-doped fiber laser with excellent beam quality," presented at CLEO/IQEC 2004, San Francisco, USA, 16-21 May 2004.

Cited By

OSA participates in CrossRef's Cited-By Linking service. Citing articles from OSA journals and other participating publishers are listed here.

Alert me when this article is cited.


Figures (6)

Fig. 1.
Fig. 1.

Profile cross sectional view of an axially symmetric multiwavelength diode laser source with kilowatt-level output power.

Fig. 2.
Fig. 2.

Axially symmetric coupling structure created by adding material to the fiber.

Fig. 3.
Fig. 3.

Axially symmetric coupling structure created by removing material from the fiber.

Fig. 4.
Fig. 4.

Experimental setup for studying the suitability of an axially symmetric pump source in the pumping of a fiber with an axially symmetric coupling structure.

Fig. 5.
Fig. 5.

The experimental combined beam 0.5 mm before the focal plane of the focusing lens. Over 90 % of the launched pump light is between the two circles indicating the coupling area.

Fig. 6.
Fig. 6.

The pulse power transmitted through the fiber as a function of diode laser radial distance from the axis.

Equations (2)

Equations on this page are rendered with MathJax. Learn more.

h L + H tan θ + ( H h ) tan γ < tan ( β + γ ) < h + 2 R L + H tan θ + ( H h ) tan γ .
tan ( α + γ ) > H h L + H tan θ + h tan γ .

Metrics