Abstract

We report a very compact Nd:YLF slab laser that is end pumped by a quasi-continuous-wave diode stack. A hybrid resonator is used to generate high output power in a near-diffraction-limited beam (i.e., a beam propogation M 2 factor of less than 1.2). A pulse energy of 14.3 mJ was obtained with a pulse width of 8.5 ns at a repetition rate of 500 Hz, which corresponds to a Q-switched peak power of 1.68 MW.

© 2004 Optical Society of America

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References

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  1. W. Koechner, Solid-State Laser Engineering, 5th ed. (Springer-Verlag, Berlin, 1999).
    [CrossRef]
  2. K. Du, N. Wu, J. Xu, J. Giesekus, P. Loosen, R. Poprawe, “Partially end-pumped Nd:YAG slab laser with a hybrid resonator,” Opt. Lett. 23, 370–372 (1998).
    [CrossRef]
  3. K. Du, D. Li, H. Zhang, P. Shi, X. Wei, R. Diart, “Electro-optically Q-switched Nd:YVO4 slab laser with a high repetition rate and a short pulse width,” Opt. Lett. 28, 87–89 (2003).
    [CrossRef] [PubMed]
  4. R. J. Shine, A. J. Alfrey, R. L. Byer, “40-W cw, TEM00-mode, diode-laser-pumped, Nd:YAG miniature-slab laser,” Opt. Lett. 20, 459–461 (1995).
    [CrossRef] [PubMed]
  5. R. S. Afzal, M. D. Selker, “Simple high-efficiency TEM00 diode-laser-pumped Q-switched laser,” Opt. Lett. 20, 465–467 (1995).
    [CrossRef] [PubMed]
  6. E. Armandillo, C. Norrie, A. Cosentino, P. Laporta, P. Wazen, P. Maine, “Diode-pumped high-efficiency high-brightness Q-switched Nd:YAG slab laser,” Opt. Lett. 22, 1168–1170 (1997).
    [CrossRef] [PubMed]
  7. R. S. Afzal, A. W. Yu, J. J. Zayhowski, T. Y. Fan, “Single-mode high-peak-power passively Q-switched diode-pumped Nd:YAG laser,” Opt. Lett. 22, 1314–1316 (1997).
    [CrossRef]
  8. C. Schnitzler, M. Höfer, J. Lutmann, D. Hoffmann, R. Poprawe, “A cw KW-class diode end pumped Nd:YAG slab laser,” in Conference on Lasers and Electro-Optics, Vol. 73 of 2002 OSA Technical Digest Series (Optical Society of America, Washington, D.C., 2002) postdeadline paper CPDC2-1.
  9. C. F. Rae, J. A. C. Terry, B. D. Sinclair, M. H. Dunn, W. Sibertt, “Single-frequency, end-pumped Nd:YLF laser excited by a 12-mJ diode-laser array,” Opt. Lett. 17, 1673–1675 (1992).
    [CrossRef] [PubMed]
  10. R. Beach, P. Reichert, W. Benett, B. Freitas, S. Mitchell, A. Velsko, J. Davin, R. Solarz, “Scalable diode-end-pumping technology applied to a 100-mJ Q-switched Nd3+:YLF laser oscillator,” Opt. Lett. 18, 1326–1328 (1993).
    [CrossRef]
  11. W. A. Clarkson, P. J. Hardman, D. C. Hanna, “High-power diode-bar end-pumped Nd:YLF laser at 1.053 μm,” Opt. Lett. 23, 1363–1364 (1998).
    [CrossRef]
  12. H. Vanherzeele, “Thermal lensing measurement and compensation in a continuous-wave mode-locked Nd:YLF laser,” Opt. Lett. 13, 369–371 (1988).
    [CrossRef] [PubMed]
  13. C. Pfistner, R. Weber, H. P. Weber, S. Merazzi, R. Gruber, “Thermal beam distortions in end-pumped Nd:YAG, Nd:GSGG, and Nd:YLF rods,” IEEE J. Quantum Electron. 30, 1605–1615 (1994).
    [CrossRef]
  14. A. E. Siegman, Lasers (University Science, Mill Valley, Calif., 1986).

2003

1998

1997

1995

1994

C. Pfistner, R. Weber, H. P. Weber, S. Merazzi, R. Gruber, “Thermal beam distortions in end-pumped Nd:YAG, Nd:GSGG, and Nd:YLF rods,” IEEE J. Quantum Electron. 30, 1605–1615 (1994).
[CrossRef]

1993

1992

1988

Afzal, R. S.

Alfrey, A. J.

Armandillo, E.

Beach, R.

Benett, W.

Byer, R. L.

Clarkson, W. A.

Cosentino, A.

Davin, J.

Diart, R.

Du, K.

Dunn, M. H.

Fan, T. Y.

Freitas, B.

Giesekus, J.

Gruber, R.

C. Pfistner, R. Weber, H. P. Weber, S. Merazzi, R. Gruber, “Thermal beam distortions in end-pumped Nd:YAG, Nd:GSGG, and Nd:YLF rods,” IEEE J. Quantum Electron. 30, 1605–1615 (1994).
[CrossRef]

Hanna, D. C.

Hardman, P. J.

Höfer, M.

C. Schnitzler, M. Höfer, J. Lutmann, D. Hoffmann, R. Poprawe, “A cw KW-class diode end pumped Nd:YAG slab laser,” in Conference on Lasers and Electro-Optics, Vol. 73 of 2002 OSA Technical Digest Series (Optical Society of America, Washington, D.C., 2002) postdeadline paper CPDC2-1.

Hoffmann, D.

C. Schnitzler, M. Höfer, J. Lutmann, D. Hoffmann, R. Poprawe, “A cw KW-class diode end pumped Nd:YAG slab laser,” in Conference on Lasers and Electro-Optics, Vol. 73 of 2002 OSA Technical Digest Series (Optical Society of America, Washington, D.C., 2002) postdeadline paper CPDC2-1.

Koechner, W.

W. Koechner, Solid-State Laser Engineering, 5th ed. (Springer-Verlag, Berlin, 1999).
[CrossRef]

Laporta, P.

Li, D.

Loosen, P.

Lutmann, J.

C. Schnitzler, M. Höfer, J. Lutmann, D. Hoffmann, R. Poprawe, “A cw KW-class diode end pumped Nd:YAG slab laser,” in Conference on Lasers and Electro-Optics, Vol. 73 of 2002 OSA Technical Digest Series (Optical Society of America, Washington, D.C., 2002) postdeadline paper CPDC2-1.

Maine, P.

Merazzi, S.

C. Pfistner, R. Weber, H. P. Weber, S. Merazzi, R. Gruber, “Thermal beam distortions in end-pumped Nd:YAG, Nd:GSGG, and Nd:YLF rods,” IEEE J. Quantum Electron. 30, 1605–1615 (1994).
[CrossRef]

Mitchell, S.

Norrie, C.

Pfistner, C.

C. Pfistner, R. Weber, H. P. Weber, S. Merazzi, R. Gruber, “Thermal beam distortions in end-pumped Nd:YAG, Nd:GSGG, and Nd:YLF rods,” IEEE J. Quantum Electron. 30, 1605–1615 (1994).
[CrossRef]

Poprawe, R.

K. Du, N. Wu, J. Xu, J. Giesekus, P. Loosen, R. Poprawe, “Partially end-pumped Nd:YAG slab laser with a hybrid resonator,” Opt. Lett. 23, 370–372 (1998).
[CrossRef]

C. Schnitzler, M. Höfer, J. Lutmann, D. Hoffmann, R. Poprawe, “A cw KW-class diode end pumped Nd:YAG slab laser,” in Conference on Lasers and Electro-Optics, Vol. 73 of 2002 OSA Technical Digest Series (Optical Society of America, Washington, D.C., 2002) postdeadline paper CPDC2-1.

Rae, C. F.

Reichert, P.

Schnitzler, C.

C. Schnitzler, M. Höfer, J. Lutmann, D. Hoffmann, R. Poprawe, “A cw KW-class diode end pumped Nd:YAG slab laser,” in Conference on Lasers and Electro-Optics, Vol. 73 of 2002 OSA Technical Digest Series (Optical Society of America, Washington, D.C., 2002) postdeadline paper CPDC2-1.

Selker, M. D.

Shi, P.

Shine, R. J.

Sibertt, W.

Siegman, A. E.

A. E. Siegman, Lasers (University Science, Mill Valley, Calif., 1986).

Sinclair, B. D.

Solarz, R.

Terry, J. A. C.

Vanherzeele, H.

Velsko, A.

Wazen, P.

Weber, H. P.

C. Pfistner, R. Weber, H. P. Weber, S. Merazzi, R. Gruber, “Thermal beam distortions in end-pumped Nd:YAG, Nd:GSGG, and Nd:YLF rods,” IEEE J. Quantum Electron. 30, 1605–1615 (1994).
[CrossRef]

Weber, R.

C. Pfistner, R. Weber, H. P. Weber, S. Merazzi, R. Gruber, “Thermal beam distortions in end-pumped Nd:YAG, Nd:GSGG, and Nd:YLF rods,” IEEE J. Quantum Electron. 30, 1605–1615 (1994).
[CrossRef]

Wei, X.

Wu, N.

Xu, J.

Yu, A. W.

Zayhowski, J. J.

Zhang, H.

IEEE J. Quantum Electron.

C. Pfistner, R. Weber, H. P. Weber, S. Merazzi, R. Gruber, “Thermal beam distortions in end-pumped Nd:YAG, Nd:GSGG, and Nd:YLF rods,” IEEE J. Quantum Electron. 30, 1605–1615 (1994).
[CrossRef]

Opt. Lett.

H. Vanherzeele, “Thermal lensing measurement and compensation in a continuous-wave mode-locked Nd:YLF laser,” Opt. Lett. 13, 369–371 (1988).
[CrossRef] [PubMed]

C. F. Rae, J. A. C. Terry, B. D. Sinclair, M. H. Dunn, W. Sibertt, “Single-frequency, end-pumped Nd:YLF laser excited by a 12-mJ diode-laser array,” Opt. Lett. 17, 1673–1675 (1992).
[CrossRef] [PubMed]

R. Beach, P. Reichert, W. Benett, B. Freitas, S. Mitchell, A. Velsko, J. Davin, R. Solarz, “Scalable diode-end-pumping technology applied to a 100-mJ Q-switched Nd3+:YLF laser oscillator,” Opt. Lett. 18, 1326–1328 (1993).
[CrossRef]

R. J. Shine, A. J. Alfrey, R. L. Byer, “40-W cw, TEM00-mode, diode-laser-pumped, Nd:YAG miniature-slab laser,” Opt. Lett. 20, 459–461 (1995).
[CrossRef] [PubMed]

R. S. Afzal, M. D. Selker, “Simple high-efficiency TEM00 diode-laser-pumped Q-switched laser,” Opt. Lett. 20, 465–467 (1995).
[CrossRef] [PubMed]

E. Armandillo, C. Norrie, A. Cosentino, P. Laporta, P. Wazen, P. Maine, “Diode-pumped high-efficiency high-brightness Q-switched Nd:YAG slab laser,” Opt. Lett. 22, 1168–1170 (1997).
[CrossRef] [PubMed]

R. S. Afzal, A. W. Yu, J. J. Zayhowski, T. Y. Fan, “Single-mode high-peak-power passively Q-switched diode-pumped Nd:YAG laser,” Opt. Lett. 22, 1314–1316 (1997).
[CrossRef]

K. Du, N. Wu, J. Xu, J. Giesekus, P. Loosen, R. Poprawe, “Partially end-pumped Nd:YAG slab laser with a hybrid resonator,” Opt. Lett. 23, 370–372 (1998).
[CrossRef]

W. A. Clarkson, P. J. Hardman, D. C. Hanna, “High-power diode-bar end-pumped Nd:YLF laser at 1.053 μm,” Opt. Lett. 23, 1363–1364 (1998).
[CrossRef]

K. Du, D. Li, H. Zhang, P. Shi, X. Wei, R. Diart, “Electro-optically Q-switched Nd:YVO4 slab laser with a high repetition rate and a short pulse width,” Opt. Lett. 28, 87–89 (2003).
[CrossRef] [PubMed]

Other

A. E. Siegman, Lasers (University Science, Mill Valley, Calif., 1986).

C. Schnitzler, M. Höfer, J. Lutmann, D. Hoffmann, R. Poprawe, “A cw KW-class diode end pumped Nd:YAG slab laser,” in Conference on Lasers and Electro-Optics, Vol. 73 of 2002 OSA Technical Digest Series (Optical Society of America, Washington, D.C., 2002) postdeadline paper CPDC2-1.

W. Koechner, Solid-State Laser Engineering, 5th ed. (Springer-Verlag, Berlin, 1999).
[CrossRef]

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Figures (5)

Fig. 1
Fig. 1

Schematic of the diode-end-pumped Nd:YLF laser resonator in (a) the x-z plane and (b) the y-z plane. LD, Laser diode; BBO, β-barium borate Pockels box; M1 and M2, mirrors 1 and 2, respectively.

Fig. 2
Fig. 2

Output energy in the quasi-continuous-wave (free-running) and Q-switched modes versus diode pump energy.

Fig. 3
Fig. 3

Pulse width versus diode pump energy.

Fig. 4
Fig. 4

Typical Q-switched pulse profile: C1, channel 1; 6 Acqs, six of average.

Fig. 5
Fig. 5

Far-field intensity distribution.

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