Abstract

We report on a Nd:YLF laser that operates at 1053 nm without optical intracavity elements for the suppression of the stronger 1047-nm transition. The Nd:YLF crystal is end pumped by a fiber optically coupled 10-W diode-laser bar. The different thermal-lensing focal lengths of the two main lasing wavelengths in a plane-parallel resonator were used to achieve the selection by tilting the end mirror slightly from its optimum position for maximum output power. With 9.8-W cw diode-laser-pumping power the 1053-nm Nd:YLF laser produces a maximum output power of 1.9 W in cw operation and nearly 1 W of average power at a Q-switch repetition rate of 15 kHz. The highest slope efficiency of 47% is achieved in cw operation.

© 1994 Optical Society of America

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References

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  1. T. M. Pollak, W. F. Wing, R. J. Grasso, E. P. Chicklis, H. P. Jenssen, “cw laser operation of Nd:YLF,” IEEE J. Quantum Electron. QE-18, 159–162 (1982).
    [CrossRef]
  2. J. M. Auerbach, R. L. Schmitt, “Diode-laser-pumped monolithic Nd:YLF laser operating at 1.053 μm,” Opt. Lett. 16, 1171–1173 (1991).
    [CrossRef] [PubMed]
  3. J. E. Murray, “Pulsed gain and thermal lensing of Nd:LiYF4,” IEEE J. Quantum Electron. QE-19, 488–491 (1983).
    [CrossRef]
  4. G. Cerullo, S. De Silvestri, V. Magni, “High efficiency, 40 W cw Nd:YLF laser with large TEM00 mode,” Opt. Commun. 93, 77–81 (1992).
    [CrossRef]
  5. W. Koechner, Solid-State Laser Engineering, 3rd ed., Vol. 1 of Springer Series in Optical Sciences (Springer-Verlag, New York, 1992).
  6. 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]
  7. B. Frei, T. Graf, J. E. Balmer, “High-peak power, Q-switched Nd:YLF laser end-pumped by a diode laser bar,” in Advanced Solid-State Lasers, A. A. Pinto, T. Y. Fan, eds., Vol. 15 of 1993 OSA Proceedings (Optical Society of America, Washington, D.C., 1993), pp. 224–228.
  8. T. Graf, J. E. Balmer, “High-power Nd:YLF laser end pumped by a diode-laser bar,” Opt. Lett. 18, 1317–1319 (1993).
    [CrossRef] [PubMed]
  9. H. Weber, “Focusing and imaging of laser beams,” Opt. Commun. 62, 124–126 (1987).
    [CrossRef]

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

G. Cerullo, S. De Silvestri, V. Magni, “High efficiency, 40 W cw Nd:YLF laser with large TEM00 mode,” Opt. Commun. 93, 77–81 (1992).
[CrossRef]

1991

1987

H. Weber, “Focusing and imaging of laser beams,” Opt. Commun. 62, 124–126 (1987).
[CrossRef]

1983

J. E. Murray, “Pulsed gain and thermal lensing of Nd:LiYF4,” IEEE J. Quantum Electron. QE-19, 488–491 (1983).
[CrossRef]

1982

T. M. Pollak, W. F. Wing, R. J. Grasso, E. P. Chicklis, H. P. Jenssen, “cw laser operation of Nd:YLF,” IEEE J. Quantum Electron. QE-18, 159–162 (1982).
[CrossRef]

Auerbach, J. M.

Balmer, J. E.

T. Graf, J. E. Balmer, “High-power Nd:YLF laser end pumped by a diode-laser bar,” Opt. Lett. 18, 1317–1319 (1993).
[CrossRef] [PubMed]

B. Frei, T. Graf, J. E. Balmer, “High-peak power, Q-switched Nd:YLF laser end-pumped by a diode laser bar,” in Advanced Solid-State Lasers, A. A. Pinto, T. Y. Fan, eds., Vol. 15 of 1993 OSA Proceedings (Optical Society of America, Washington, D.C., 1993), pp. 224–228.

Cerullo, G.

G. Cerullo, S. De Silvestri, V. Magni, “High efficiency, 40 W cw Nd:YLF laser with large TEM00 mode,” Opt. Commun. 93, 77–81 (1992).
[CrossRef]

Chicklis, E. P.

T. M. Pollak, W. F. Wing, R. J. Grasso, E. P. Chicklis, H. P. Jenssen, “cw laser operation of Nd:YLF,” IEEE J. Quantum Electron. QE-18, 159–162 (1982).
[CrossRef]

De Silvestri, S.

G. Cerullo, S. De Silvestri, V. Magni, “High efficiency, 40 W cw Nd:YLF laser with large TEM00 mode,” Opt. Commun. 93, 77–81 (1992).
[CrossRef]

Frei, B.

B. Frei, T. Graf, J. E. Balmer, “High-peak power, Q-switched Nd:YLF laser end-pumped by a diode laser bar,” in Advanced Solid-State Lasers, A. A. Pinto, T. Y. Fan, eds., Vol. 15 of 1993 OSA Proceedings (Optical Society of America, Washington, D.C., 1993), pp. 224–228.

Graf, T.

T. Graf, J. E. Balmer, “High-power Nd:YLF laser end pumped by a diode-laser bar,” Opt. Lett. 18, 1317–1319 (1993).
[CrossRef] [PubMed]

B. Frei, T. Graf, J. E. Balmer, “High-peak power, Q-switched Nd:YLF laser end-pumped by a diode laser bar,” in Advanced Solid-State Lasers, A. A. Pinto, T. Y. Fan, eds., Vol. 15 of 1993 OSA Proceedings (Optical Society of America, Washington, D.C., 1993), pp. 224–228.

Grasso, R. J.

T. M. Pollak, W. F. Wing, R. J. Grasso, E. P. Chicklis, H. P. Jenssen, “cw laser operation of Nd:YLF,” IEEE J. Quantum Electron. QE-18, 159–162 (1982).
[CrossRef]

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]

Jenssen, H. P.

T. M. Pollak, W. F. Wing, R. J. Grasso, E. P. Chicklis, H. P. Jenssen, “cw laser operation of Nd:YLF,” IEEE J. Quantum Electron. QE-18, 159–162 (1982).
[CrossRef]

Koechner, W.

W. Koechner, Solid-State Laser Engineering, 3rd ed., Vol. 1 of Springer Series in Optical Sciences (Springer-Verlag, New York, 1992).

Magni, V.

G. Cerullo, S. De Silvestri, V. Magni, “High efficiency, 40 W cw Nd:YLF laser with large TEM00 mode,” Opt. Commun. 93, 77–81 (1992).
[CrossRef]

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]

Murray, J. E.

J. E. Murray, “Pulsed gain and thermal lensing of Nd:LiYF4,” IEEE J. Quantum Electron. QE-19, 488–491 (1983).
[CrossRef]

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]

Pollak, T. M.

T. M. Pollak, W. F. Wing, R. J. Grasso, E. P. Chicklis, H. P. Jenssen, “cw laser operation of Nd:YLF,” IEEE J. Quantum Electron. QE-18, 159–162 (1982).
[CrossRef]

Schmitt, R. L.

Weber, H.

H. Weber, “Focusing and imaging of laser beams,” Opt. Commun. 62, 124–126 (1987).
[CrossRef]

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]

Wing, W. F.

T. M. Pollak, W. F. Wing, R. J. Grasso, E. P. Chicklis, H. P. Jenssen, “cw laser operation of Nd:YLF,” IEEE J. Quantum Electron. QE-18, 159–162 (1982).
[CrossRef]

IEEE J. Quantum Electron.

T. M. Pollak, W. F. Wing, R. J. Grasso, E. P. Chicklis, H. P. Jenssen, “cw laser operation of Nd:YLF,” IEEE J. Quantum Electron. QE-18, 159–162 (1982).
[CrossRef]

J. E. Murray, “Pulsed gain and thermal lensing of Nd:LiYF4,” IEEE J. Quantum Electron. QE-19, 488–491 (1983).
[CrossRef]

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. Commun.

H. Weber, “Focusing and imaging of laser beams,” Opt. Commun. 62, 124–126 (1987).
[CrossRef]

G. Cerullo, S. De Silvestri, V. Magni, “High efficiency, 40 W cw Nd:YLF laser with large TEM00 mode,” Opt. Commun. 93, 77–81 (1992).
[CrossRef]

Opt. Lett.

Other

B. Frei, T. Graf, J. E. Balmer, “High-peak power, Q-switched Nd:YLF laser end-pumped by a diode laser bar,” in Advanced Solid-State Lasers, A. A. Pinto, T. Y. Fan, eds., Vol. 15 of 1993 OSA Proceedings (Optical Society of America, Washington, D.C., 1993), pp. 224–228.

W. Koechner, Solid-State Laser Engineering, 3rd ed., Vol. 1 of Springer Series in Optical Sciences (Springer-Verlag, New York, 1992).

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Figures (3)

Fig. 1
Fig. 1

Schematic of the diode-laser-pumped Nd:YLF laser operating at 1053 nm without wavelength-selecting elements. HR, highly reflective; AR, antireflective.

Fig. 2
Fig. 2

Slope efficiency of the 91%-coupled plane-parallel cw resonator lasing at 1053 nm.

Fig. 3
Fig. 3

Output parameters of the high-repetition-rate Q-switched laser at 1053 nm.

Tables (1)

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Table 1 Comparison of Three Resonator Configurations Lasing at Both 1053 nm and 1047 nm or Only at 1053 nm

Equations (1)

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f = K A P a ( 1 2 d n d T + α r 0 ( n 0 - 1 ) L ) - 1 ,

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