Abstract

We demonstrate the generation of high-energy picosecond pulses directly from a thin-disk laser oscillator by employing a self-imaging active multipass geometry. Stable single-pulse operation has been obtained with an average output power in excess of 50W, excluding a cw background of 8%, at a repetition rate of 3.8MHz. Self-starting passive mode locking was accomplished using a semiconductor saturable absorber mirror. The maximum pulse energy was 13.4μJ at a pulse duration of 1.36ps with a time-bandwidth product of 0.34. Single-pass external frequency doubling with a conversion efficiency of 60% yielded >28W of average power at 515nm.

© 2008 Optical Society of America

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References

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  1. F. Brunner, E. Innerhofer, S. V. Marchese, T. Südmeyer, R. Paschotta, T. Usami, H. Ito, S. Kurimura, K. Kitamura, G. Arisholm, and U. Keller, Opt. Lett. 29, 1921 (2004).
    [CrossRef] [PubMed]
  2. S. V. Marchese, S. Hashimoto, C. R. E. Baer, M. S. Ruosch, R. Grange, M. Golling, T. Südmeyer, U. Keller, G. Lepine, G. Gingras, and B. Witzel, in Conference on Laser and Electro-Optics/Europe (CLEO-Europe), Vol. 18 of OSA Trends in Optics and Photonics Series (Optical Society of America, 2007), paper CF3-2-Mon.
  3. G. Palmer, M. Siegel, A. Steinmann, and U. Morgner, Opt. Lett. 32, 1593 (2007).
    [CrossRef] [PubMed]
  4. A. Giesen and J. Speiser, IEEE J. Sel. Top. Quantum Electron. 13, 598 (2007).
    [CrossRef]
  5. S. V. Marchese, T. Südmeyer, M. Golling, R. Grange, and U. Keller, Opt. Lett. 31, 2728 (2006).
    [CrossRef] [PubMed]
  6. E. Innerhofer, T. Südmeyer, F. Brunner, R. Häring, A. Aschwanden, R. Paschotta, C. Hönninger, M. Kumkar, and U. Keller, Opt. Lett. 28, 367 (2003).
    [CrossRef] [PubMed]
  7. A. M. Scott, G. Cook, and A. P. G. Davies, Appl. Opt. 40, 2461 (2001).
    [CrossRef]
  8. M. Kumkar, “Laser amplifying system,” U.S. Patent 6,765,947 (20 July 2004).
  9. F. Brunner, R. Paschotta, J. Aus der Au, G. J. Spühler, F. Morier-Genoud, R. Hövel, M. Moser, S. Erhard, M. Karszewski, A. Giesen, and U. Keller, Opt. Lett. 26, 379 (2001).
    [CrossRef]
  10. F. X. Kärtner and U. Keller, Opt. Lett. 20, 16 (1995).
    [CrossRef] [PubMed]
  11. B. Ortaç, O. Schmidt, T. Schreiber, J. Limpert, A. Tünnermann, and A. Hideur, Opt. Express 15, 10725 (2007).
    [CrossRef] [PubMed]
  12. Code SNLO version 41.0, author Arlee Smith, Sandia National Laboratories (www.sandia.gov).
  13. S. Kelly, Electron. Lett. 28, 806 (1992).
    [CrossRef]
  14. C. Hönninger, R. Paschotta, F. Morier-Genoud, M. Moser, and U. Keller, J. Opt. Soc. Am. B 16, 46 (1999).
    [CrossRef]
  15. Using a larger (2 mm) pump spot we meanwhile achieved energies up to 16 μJ at 54 W of average power without any cw background. Q switching was observed at average output powers below 8 W.

2007 (4)

S. V. Marchese, S. Hashimoto, C. R. E. Baer, M. S. Ruosch, R. Grange, M. Golling, T. Südmeyer, U. Keller, G. Lepine, G. Gingras, and B. Witzel, in Conference on Laser and Electro-Optics/Europe (CLEO-Europe), Vol. 18 of OSA Trends in Optics and Photonics Series (Optical Society of America, 2007), paper CF3-2-Mon.

G. Palmer, M. Siegel, A. Steinmann, and U. Morgner, Opt. Lett. 32, 1593 (2007).
[CrossRef] [PubMed]

A. Giesen and J. Speiser, IEEE J. Sel. Top. Quantum Electron. 13, 598 (2007).
[CrossRef]

B. Ortaç, O. Schmidt, T. Schreiber, J. Limpert, A. Tünnermann, and A. Hideur, Opt. Express 15, 10725 (2007).
[CrossRef] [PubMed]

2006 (1)

2004 (1)

2003 (1)

2001 (2)

1999 (1)

1995 (1)

1992 (1)

S. Kelly, Electron. Lett. 28, 806 (1992).
[CrossRef]

Arisholm, G.

Aschwanden, A.

Aus der Au, J.

Baer, C. R. E.

S. V. Marchese, S. Hashimoto, C. R. E. Baer, M. S. Ruosch, R. Grange, M. Golling, T. Südmeyer, U. Keller, G. Lepine, G. Gingras, and B. Witzel, in Conference on Laser and Electro-Optics/Europe (CLEO-Europe), Vol. 18 of OSA Trends in Optics and Photonics Series (Optical Society of America, 2007), paper CF3-2-Mon.

Brunner, F.

Cook, G.

Davies, A. P. G.

Erhard, S.

Giesen, A.

Gingras, G.

S. V. Marchese, S. Hashimoto, C. R. E. Baer, M. S. Ruosch, R. Grange, M. Golling, T. Südmeyer, U. Keller, G. Lepine, G. Gingras, and B. Witzel, in Conference on Laser and Electro-Optics/Europe (CLEO-Europe), Vol. 18 of OSA Trends in Optics and Photonics Series (Optical Society of America, 2007), paper CF3-2-Mon.

Golling, M.

S. V. Marchese, S. Hashimoto, C. R. E. Baer, M. S. Ruosch, R. Grange, M. Golling, T. Südmeyer, U. Keller, G. Lepine, G. Gingras, and B. Witzel, in Conference on Laser and Electro-Optics/Europe (CLEO-Europe), Vol. 18 of OSA Trends in Optics and Photonics Series (Optical Society of America, 2007), paper CF3-2-Mon.

S. V. Marchese, T. Südmeyer, M. Golling, R. Grange, and U. Keller, Opt. Lett. 31, 2728 (2006).
[CrossRef] [PubMed]

Grange, R.

S. V. Marchese, S. Hashimoto, C. R. E. Baer, M. S. Ruosch, R. Grange, M. Golling, T. Südmeyer, U. Keller, G. Lepine, G. Gingras, and B. Witzel, in Conference on Laser and Electro-Optics/Europe (CLEO-Europe), Vol. 18 of OSA Trends in Optics and Photonics Series (Optical Society of America, 2007), paper CF3-2-Mon.

S. V. Marchese, T. Südmeyer, M. Golling, R. Grange, and U. Keller, Opt. Lett. 31, 2728 (2006).
[CrossRef] [PubMed]

Häring, R.

Hashimoto, S.

S. V. Marchese, S. Hashimoto, C. R. E. Baer, M. S. Ruosch, R. Grange, M. Golling, T. Südmeyer, U. Keller, G. Lepine, G. Gingras, and B. Witzel, in Conference on Laser and Electro-Optics/Europe (CLEO-Europe), Vol. 18 of OSA Trends in Optics and Photonics Series (Optical Society of America, 2007), paper CF3-2-Mon.

Hideur, A.

Hönninger, C.

Hövel, R.

Innerhofer, E.

Ito, H.

Karszewski, M.

Kärtner, F. X.

Keller, U.

Kelly, S.

S. Kelly, Electron. Lett. 28, 806 (1992).
[CrossRef]

Kitamura, K.

Kumkar, M.

Kurimura, S.

Lepine, G.

S. V. Marchese, S. Hashimoto, C. R. E. Baer, M. S. Ruosch, R. Grange, M. Golling, T. Südmeyer, U. Keller, G. Lepine, G. Gingras, and B. Witzel, in Conference on Laser and Electro-Optics/Europe (CLEO-Europe), Vol. 18 of OSA Trends in Optics and Photonics Series (Optical Society of America, 2007), paper CF3-2-Mon.

Limpert, J.

Marchese, S. V.

S. V. Marchese, S. Hashimoto, C. R. E. Baer, M. S. Ruosch, R. Grange, M. Golling, T. Südmeyer, U. Keller, G. Lepine, G. Gingras, and B. Witzel, in Conference on Laser and Electro-Optics/Europe (CLEO-Europe), Vol. 18 of OSA Trends in Optics and Photonics Series (Optical Society of America, 2007), paper CF3-2-Mon.

S. V. Marchese, T. Südmeyer, M. Golling, R. Grange, and U. Keller, Opt. Lett. 31, 2728 (2006).
[CrossRef] [PubMed]

F. Brunner, E. Innerhofer, S. V. Marchese, T. Südmeyer, R. Paschotta, T. Usami, H. Ito, S. Kurimura, K. Kitamura, G. Arisholm, and U. Keller, Opt. Lett. 29, 1921 (2004).
[CrossRef] [PubMed]

Morgner, U.

Morier-Genoud, F.

Moser, M.

Ortaç, B.

Palmer, G.

Paschotta, R.

Ruosch, M. S.

S. V. Marchese, S. Hashimoto, C. R. E. Baer, M. S. Ruosch, R. Grange, M. Golling, T. Südmeyer, U. Keller, G. Lepine, G. Gingras, and B. Witzel, in Conference on Laser and Electro-Optics/Europe (CLEO-Europe), Vol. 18 of OSA Trends in Optics and Photonics Series (Optical Society of America, 2007), paper CF3-2-Mon.

Schmidt, O.

Schreiber, T.

Scott, A. M.

Siegel, M.

Speiser, J.

A. Giesen and J. Speiser, IEEE J. Sel. Top. Quantum Electron. 13, 598 (2007).
[CrossRef]

Spühler, G. J.

Steinmann, A.

Südmeyer, T.

S. V. Marchese, S. Hashimoto, C. R. E. Baer, M. S. Ruosch, R. Grange, M. Golling, T. Südmeyer, U. Keller, G. Lepine, G. Gingras, and B. Witzel, in Conference on Laser and Electro-Optics/Europe (CLEO-Europe), Vol. 18 of OSA Trends in Optics and Photonics Series (Optical Society of America, 2007), paper CF3-2-Mon.

S. V. Marchese, T. Südmeyer, M. Golling, R. Grange, and U. Keller, Opt. Lett. 31, 2728 (2006).
[CrossRef] [PubMed]

F. Brunner, E. Innerhofer, S. V. Marchese, T. Südmeyer, R. Paschotta, T. Usami, H. Ito, S. Kurimura, K. Kitamura, G. Arisholm, and U. Keller, Opt. Lett. 29, 1921 (2004).
[CrossRef] [PubMed]

E. Innerhofer, T. Südmeyer, F. Brunner, R. Häring, A. Aschwanden, R. Paschotta, C. Hönninger, M. Kumkar, and U. Keller, Opt. Lett. 28, 367 (2003).
[CrossRef] [PubMed]

Tünnermann, A.

Usami, T.

Witzel, B.

S. V. Marchese, S. Hashimoto, C. R. E. Baer, M. S. Ruosch, R. Grange, M. Golling, T. Südmeyer, U. Keller, G. Lepine, G. Gingras, and B. Witzel, in Conference on Laser and Electro-Optics/Europe (CLEO-Europe), Vol. 18 of OSA Trends in Optics and Photonics Series (Optical Society of America, 2007), paper CF3-2-Mon.

Appl. Opt. (1)

Electron. Lett. (1)

S. Kelly, Electron. Lett. 28, 806 (1992).
[CrossRef]

IEEE J. Sel. Top. Quantum Electron. (1)

A. Giesen and J. Speiser, IEEE J. Sel. Top. Quantum Electron. 13, 598 (2007).
[CrossRef]

J. Opt. Soc. Am. B (1)

Opt. Express (1)

Opt. Lett. (6)

Other (4)

M. Kumkar, “Laser amplifying system,” U.S. Patent 6,765,947 (20 July 2004).

S. V. Marchese, S. Hashimoto, C. R. E. Baer, M. S. Ruosch, R. Grange, M. Golling, T. Südmeyer, U. Keller, G. Lepine, G. Gingras, and B. Witzel, in Conference on Laser and Electro-Optics/Europe (CLEO-Europe), Vol. 18 of OSA Trends in Optics and Photonics Series (Optical Society of America, 2007), paper CF3-2-Mon.

Code SNLO version 41.0, author Arlee Smith, Sandia National Laboratories (www.sandia.gov).

Using a larger (2 mm) pump spot we meanwhile achieved energies up to 16 μJ at 54 W of average power without any cw background. Q switching was observed at average output powers below 8 W.

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Figures (3)

Fig. 1
Fig. 1

Schematic design of the passively mode-locked Yb:YAG TD laser with angular multiplexing. For reasons of clarity, in this figure only four passes through the multipass cell (AMC) have been plotted. The actual experimental setup contained 11 passes through the AMC. Six Gires–Tournois interferometric mirrors (GTI2-7) are included in the design. All remaining mirrors are denominated with an “M.”

Fig. 2
Fig. 2

Autocorrelation (AC) trace and optical spectrum of the laser output. The shaded area shows an ideal sech 2 fit of the optical spectrum with an optical bandwidth of 0.88 nm . The AC trace corresponds to a pulse with FWHM pulse duration of 1.36 ps , assuming a sech 2 pulse shape.

Fig. 3
Fig. 3

Change of output power (squares) and autocorrelation width (open circles) with pump power. Single-pulse mode-locking (ML) behavior was observed for pump powers between 105 W and 170 W . The lines are visual aids, the dash-dotted line being inversely proportional to the solid line in the ML regime. For pump powers less than 105 W , ML ceases and the laser operates in continuous mode. The inset shows the measured rf spectrum for operation with maximum pulse energy and reveals relaxation oscillations suppressed to below 37 dBc with respect to the carrier at 3.79 MHz .

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