Abstract

Pumping Yb:YAG or Yb:LuAG into the zero-phonon line at 969 nm instead of using the common pump wavelength of 940 nm reduces the heat generation by 32%. In addition to the 3% increase of the Stokes efficiency, this significantly reduces the diffraction losses caused by the thermally induced phase distortions leading to a remarkable increase of the overall efficiency especially of fundamental-mode thin-disk lasers. Using this pumping scheme in an Yb:LuAG thin-disk laser, we achieved 742 W of nearly diffraction limited (M21.5) output power at an unprecedented high optical efficiency of 58.5%. For multimode operation (M215) the maximum optical efficiency of an Yb:YAG thin-disk laser was increased to 72%.

© 2012 Optical Society of America

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  1. A. Killi, C. Stolzenburg, I. Zawischa, J. Kleinbauer, S. Schad, R. Brockmann, S. Weiler, J. Neuhaus, S. Kalfhues, E. Mehner, D. Bauer, H. Schlueter, and C. Schmitz, Proc. SPIE 7193, 71931T (2009).
    [CrossRef]
  2. J. Mende, E. Schmid, J. Speiser, G. Spindler, and A. Giesen, in Advanced Solid-State Photonics, OSA Technical Digest Series (CD) (Optical Society of America, 2009), paper WB19.
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    [CrossRef]
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    [CrossRef]
  5. D. Sangla, M. Castaing, F. Balembois, and P. Georges, Opt. Lett. 34, 2159 (2009).
    [CrossRef]
  6. L. B. Glebov, Proc. SPIE 6216, 621601 (2006).
    [CrossRef]
  7. R. Peters, C. Kränkel, K. Petermann, and G. Huber, Opt. Express 15, 7075 (2007).
    [CrossRef]
  8. B. Weichelt, K. S. Wentsch, A. Voss, M. A. Ahmed, and Th. Graf, Laser Phys. Lett. 9, 110 (2012).
    [CrossRef]
  9. S. Erhard, “Pumpoptiken und Resonatoren für den Scheibenlaser,” Ph.D. thesis (Universität Stuttgart, 2002).
  10. K. Beil, S. T. Fredrich-Thornton, F. Tellkamp, R. Peters, C. Kränkel, K. Petermann, and G. Huber, Opt. Express 18, 20712 (2010).
    [CrossRef]
  11. International Organization for Standardization, “Lasers and laser-related equipment—test methods for laser beam parameters—beam width, divergence angle and beam propagation factor,” ISO 11146 (1999).

2012 (1)

B. Weichelt, K. S. Wentsch, A. Voss, M. A. Ahmed, and Th. Graf, Laser Phys. Lett. 9, 110 (2012).
[CrossRef]

2010 (1)

2009 (2)

A. Killi, C. Stolzenburg, I. Zawischa, J. Kleinbauer, S. Schad, R. Brockmann, S. Weiler, J. Neuhaus, S. Kalfhues, E. Mehner, D. Bauer, H. Schlueter, and C. Schmitz, Proc. SPIE 7193, 71931T (2009).
[CrossRef]

D. Sangla, M. Castaing, F. Balembois, and P. Georges, Opt. Lett. 34, 2159 (2009).
[CrossRef]

2007 (1)

2006 (1)

L. B. Glebov, Proc. SPIE 6216, 621601 (2006).
[CrossRef]

2005 (1)

J. J. Romero, J. Johannsen, M. Mond, K. Petermann, G. Huber, and E. Heumann, Appl. Phys. B 80, 159 (2005).
[CrossRef]

1999 (1)

Ahmed, M. A.

B. Weichelt, K. S. Wentsch, A. Voss, M. A. Ahmed, and Th. Graf, Laser Phys. Lett. 9, 110 (2012).
[CrossRef]

Balembois, F.

Bauer, D.

A. Killi, C. Stolzenburg, I. Zawischa, J. Kleinbauer, S. Schad, R. Brockmann, S. Weiler, J. Neuhaus, S. Kalfhues, E. Mehner, D. Bauer, H. Schlueter, and C. Schmitz, Proc. SPIE 7193, 71931T (2009).
[CrossRef]

Beil, K.

Brockmann, R.

A. Killi, C. Stolzenburg, I. Zawischa, J. Kleinbauer, S. Schad, R. Brockmann, S. Weiler, J. Neuhaus, S. Kalfhues, E. Mehner, D. Bauer, H. Schlueter, and C. Schmitz, Proc. SPIE 7193, 71931T (2009).
[CrossRef]

Castaing, M.

Erhard, S.

S. Erhard, “Pumpoptiken und Resonatoren für den Scheibenlaser,” Ph.D. thesis (Universität Stuttgart, 2002).

Fredrich-Thornton, S. T.

Georges, P.

Giesen, A.

J. Mende, E. Schmid, J. Speiser, G. Spindler, and A. Giesen, in Advanced Solid-State Photonics, OSA Technical Digest Series (CD) (Optical Society of America, 2009), paper WB19.

Glebov, L. B.

L. B. Glebov, Proc. SPIE 6216, 621601 (2006).
[CrossRef]

Graf, Th.

B. Weichelt, K. S. Wentsch, A. Voss, M. A. Ahmed, and Th. Graf, Laser Phys. Lett. 9, 110 (2012).
[CrossRef]

Heumann, E.

J. J. Romero, J. Johannsen, M. Mond, K. Petermann, G. Huber, and E. Heumann, Appl. Phys. B 80, 159 (2005).
[CrossRef]

Huber, G.

Johannsen, J.

J. J. Romero, J. Johannsen, M. Mond, K. Petermann, G. Huber, and E. Heumann, Appl. Phys. B 80, 159 (2005).
[CrossRef]

Kalfhues, S.

A. Killi, C. Stolzenburg, I. Zawischa, J. Kleinbauer, S. Schad, R. Brockmann, S. Weiler, J. Neuhaus, S. Kalfhues, E. Mehner, D. Bauer, H. Schlueter, and C. Schmitz, Proc. SPIE 7193, 71931T (2009).
[CrossRef]

Kasamatsu, T.

Killi, A.

A. Killi, C. Stolzenburg, I. Zawischa, J. Kleinbauer, S. Schad, R. Brockmann, S. Weiler, J. Neuhaus, S. Kalfhues, E. Mehner, D. Bauer, H. Schlueter, and C. Schmitz, Proc. SPIE 7193, 71931T (2009).
[CrossRef]

Kleinbauer, J.

A. Killi, C. Stolzenburg, I. Zawischa, J. Kleinbauer, S. Schad, R. Brockmann, S. Weiler, J. Neuhaus, S. Kalfhues, E. Mehner, D. Bauer, H. Schlueter, and C. Schmitz, Proc. SPIE 7193, 71931T (2009).
[CrossRef]

Kränkel, C.

Kuwano, Y.

Mehner, E.

A. Killi, C. Stolzenburg, I. Zawischa, J. Kleinbauer, S. Schad, R. Brockmann, S. Weiler, J. Neuhaus, S. Kalfhues, E. Mehner, D. Bauer, H. Schlueter, and C. Schmitz, Proc. SPIE 7193, 71931T (2009).
[CrossRef]

Mende, J.

J. Mende, E. Schmid, J. Speiser, G. Spindler, and A. Giesen, in Advanced Solid-State Photonics, OSA Technical Digest Series (CD) (Optical Society of America, 2009), paper WB19.

Mond, M.

J. J. Romero, J. Johannsen, M. Mond, K. Petermann, G. Huber, and E. Heumann, Appl. Phys. B 80, 159 (2005).
[CrossRef]

Neuhaus, J.

A. Killi, C. Stolzenburg, I. Zawischa, J. Kleinbauer, S. Schad, R. Brockmann, S. Weiler, J. Neuhaus, S. Kalfhues, E. Mehner, D. Bauer, H. Schlueter, and C. Schmitz, Proc. SPIE 7193, 71931T (2009).
[CrossRef]

Petermann, K.

Peters, R.

Romero, J. J.

J. J. Romero, J. Johannsen, M. Mond, K. Petermann, G. Huber, and E. Heumann, Appl. Phys. B 80, 159 (2005).
[CrossRef]

Sangla, D.

Schad, S.

A. Killi, C. Stolzenburg, I. Zawischa, J. Kleinbauer, S. Schad, R. Brockmann, S. Weiler, J. Neuhaus, S. Kalfhues, E. Mehner, D. Bauer, H. Schlueter, and C. Schmitz, Proc. SPIE 7193, 71931T (2009).
[CrossRef]

Schlueter, H.

A. Killi, C. Stolzenburg, I. Zawischa, J. Kleinbauer, S. Schad, R. Brockmann, S. Weiler, J. Neuhaus, S. Kalfhues, E. Mehner, D. Bauer, H. Schlueter, and C. Schmitz, Proc. SPIE 7193, 71931T (2009).
[CrossRef]

Schmid, E.

J. Mende, E. Schmid, J. Speiser, G. Spindler, and A. Giesen, in Advanced Solid-State Photonics, OSA Technical Digest Series (CD) (Optical Society of America, 2009), paper WB19.

Schmitz, C.

A. Killi, C. Stolzenburg, I. Zawischa, J. Kleinbauer, S. Schad, R. Brockmann, S. Weiler, J. Neuhaus, S. Kalfhues, E. Mehner, D. Bauer, H. Schlueter, and C. Schmitz, Proc. SPIE 7193, 71931T (2009).
[CrossRef]

Sekita, H.

Speiser, J.

J. Mende, E. Schmid, J. Speiser, G. Spindler, and A. Giesen, in Advanced Solid-State Photonics, OSA Technical Digest Series (CD) (Optical Society of America, 2009), paper WB19.

Spindler, G.

J. Mende, E. Schmid, J. Speiser, G. Spindler, and A. Giesen, in Advanced Solid-State Photonics, OSA Technical Digest Series (CD) (Optical Society of America, 2009), paper WB19.

Stolzenburg, C.

A. Killi, C. Stolzenburg, I. Zawischa, J. Kleinbauer, S. Schad, R. Brockmann, S. Weiler, J. Neuhaus, S. Kalfhues, E. Mehner, D. Bauer, H. Schlueter, and C. Schmitz, Proc. SPIE 7193, 71931T (2009).
[CrossRef]

Tellkamp, F.

Voss, A.

B. Weichelt, K. S. Wentsch, A. Voss, M. A. Ahmed, and Th. Graf, Laser Phys. Lett. 9, 110 (2012).
[CrossRef]

Weichelt, B.

B. Weichelt, K. S. Wentsch, A. Voss, M. A. Ahmed, and Th. Graf, Laser Phys. Lett. 9, 110 (2012).
[CrossRef]

Weiler, S.

A. Killi, C. Stolzenburg, I. Zawischa, J. Kleinbauer, S. Schad, R. Brockmann, S. Weiler, J. Neuhaus, S. Kalfhues, E. Mehner, D. Bauer, H. Schlueter, and C. Schmitz, Proc. SPIE 7193, 71931T (2009).
[CrossRef]

Wentsch, K. S.

B. Weichelt, K. S. Wentsch, A. Voss, M. A. Ahmed, and Th. Graf, Laser Phys. Lett. 9, 110 (2012).
[CrossRef]

Zawischa, I.

A. Killi, C. Stolzenburg, I. Zawischa, J. Kleinbauer, S. Schad, R. Brockmann, S. Weiler, J. Neuhaus, S. Kalfhues, E. Mehner, D. Bauer, H. Schlueter, and C. Schmitz, Proc. SPIE 7193, 71931T (2009).
[CrossRef]

Appl. Opt. (1)

Appl. Phys. B (1)

J. J. Romero, J. Johannsen, M. Mond, K. Petermann, G. Huber, and E. Heumann, Appl. Phys. B 80, 159 (2005).
[CrossRef]

Laser Phys. Lett. (1)

B. Weichelt, K. S. Wentsch, A. Voss, M. A. Ahmed, and Th. Graf, Laser Phys. Lett. 9, 110 (2012).
[CrossRef]

Opt. Express (2)

Opt. Lett. (1)

Proc. SPIE (2)

L. B. Glebov, Proc. SPIE 6216, 621601 (2006).
[CrossRef]

A. Killi, C. Stolzenburg, I. Zawischa, J. Kleinbauer, S. Schad, R. Brockmann, S. Weiler, J. Neuhaus, S. Kalfhues, E. Mehner, D. Bauer, H. Schlueter, and C. Schmitz, Proc. SPIE 7193, 71931T (2009).
[CrossRef]

Other (3)

J. Mende, E. Schmid, J. Speiser, G. Spindler, and A. Giesen, in Advanced Solid-State Photonics, OSA Technical Digest Series (CD) (Optical Society of America, 2009), paper WB19.

S. Erhard, “Pumpoptiken und Resonatoren für den Scheibenlaser,” Ph.D. thesis (Universität Stuttgart, 2002).

International Organization for Standardization, “Lasers and laser-related equipment—test methods for laser beam parameters—beam width, divergence angle and beam propagation factor,” ISO 11146 (1999).

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Figures (6)

Fig. 1.
Fig. 1.

Schematic setup of the zero-phonon line pumped thin-disk laser.

Fig. 2.
Fig. 2.

Normalized measured pump diode spectra for different currents of the diode stack (at a cooling temperature of 22 °C). The locking efficiency is increasing with the current of the diode. The absorption spectrum of Yb:YAG is indicated by the dashed line.

Fig. 3.
Fig. 3.

Measured laser output power and optical efficiency versus pump power for an Yb:YAG thin-disk crystal pumped at the ZPL transition of 969 nm.

Fig. 4.
Fig. 4.

Measurement of the optical phase front deformation of the thin-disk laser crystal (using a measurement wavelength of 375 nm) at a pump power density of 5.2kW/cm2.

Fig. 5.
Fig. 5.

Yb:LuAG thin-disk laser performance with near diffraction limited beam quality.

Fig. 6.
Fig. 6.

Measured beam quality factor M2 versus laser output power for the x and y directions.

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