Abstract

Using a novel end-pumped, end-cooled geometry, we demonstrated a Nd:YVO4 cw laser that produces close to 2 W of single-mode output when pumped by a high-brightness 100-μm-core diode fiber source. An optical–optical conversion efficiency of 49% was obtained. Beam quality was found to be nearly diffraction-limited (M2 = 1.08) and independent of pumping power.

© 1997 Optical Society of America

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References

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  1. G. J. Kintz, T. Baer, “Single-frequency operation in solid-state laser materials with short absorption depths,” IEEE J. Quantum Electron. 26, 1457–1459 (1990).
    [CrossRef]
  2. W. F. Krupke, M. D. Shinn, J. E. Marion, J. A. Caird, S. E. Stokowski, “Spectroscopic, optical, and thermomechanical properties of neodymium- and chromium-doped gadolinium scandium gallium garnet,” J. Opt. Soc. Am. B 3, 102–114 (1986).
    [CrossRef]
  3. D. C. Brown, J. H. Kelly, J. A. Abate, “Active-mirror amplifiers: progress and prospects,” IEEE J. Quantum Electron. QE-17, 1755–1765 (1981).
    [CrossRef]
  4. J. A. Abate, L. Lund, D. C. Brown, S. Jacobs, S. Refermat, J. Kelly, M. Gavin, J. Waldbillig, O. Lewis, “Active-mirror: a large-aperture medium repetition rate Nd:Glass amplifier,” Appl. Opt. 20, 351–361 (1981).
    [CrossRef] [PubMed]
  5. W. S. Martin, “Face-pumped laser,” (General Electric Research and Development Center, Schenectady, New York, 1968).
  6. A. K. Cousins, “Temperature and thermal stress scaling in finite-length end-pumped laser rods,” IEEE J. Quantum Electron. 28, 1057–1069 (1992).
    [CrossRef]
  7. D. C. Brown, “Comparison of thermal effects in end-diode-pumped solid-state lasers with end or side cooling,” IEEE J. Quantum Electron. (to be published).
  8. Vanadate crystals were obtained from ITI Corp., Los Angeles, Calif.
  9. T. Kasamatsu, H. Sekita, “Laser-diode-pumped Nd:YAG active-mirror laser,” Appl. Opt. 36, 1879–1881 (1997).
    [CrossRef] [PubMed]
  10. T. Y. Fan, “Modeling and CW operation of a quasi-three-level 946 nm Nd:YAG laser,” IEEE J. Quantum Electron. QE-23, 605–611 (1987).
  11. W. P. Risk, “Modeling of longitudinally pumped solid-state lasers exhibiting reabsorption loss,” J. Opt. Soc. Am. B 5, 1412–1423 (1988).
    [CrossRef]
  12. R. A. Fields, T. S. Rose, M. E. Innocenzi, H. T. Yura, C. L. Fincher, “Diode laser end-pumped neodymium lasers: the road to higher powers,” in Tunable Solid state Lasers, M. L. Shand, H. P. Jenssen, eds. Vol. 5 of OSA Proceedings (Optical Society of America, Washington, D.C., 1989), pp. 301–308.
  13. W Koechner, Solid-State Laser Engineering, 4th ed., Vol. 1 of Springer-Verlag Series in Optical Sciences (Springer-Verlag, New York, 1996).
  14. J. Zhang, M. Quade, K. M. Du, Y. Liao, S. Falter, M. Baumann, P. Loosen, P. Poprawe, “Efficient TEM00 operation of Nd:YVO4 laser end-pumped by fibre-coupled diode laser,” Electron. Lett. 33, 775–777 (1997).
    [CrossRef]

1997

J. Zhang, M. Quade, K. M. Du, Y. Liao, S. Falter, M. Baumann, P. Loosen, P. Poprawe, “Efficient TEM00 operation of Nd:YVO4 laser end-pumped by fibre-coupled diode laser,” Electron. Lett. 33, 775–777 (1997).
[CrossRef]

T. Kasamatsu, H. Sekita, “Laser-diode-pumped Nd:YAG active-mirror laser,” Appl. Opt. 36, 1879–1881 (1997).
[CrossRef] [PubMed]

1992

A. K. Cousins, “Temperature and thermal stress scaling in finite-length end-pumped laser rods,” IEEE J. Quantum Electron. 28, 1057–1069 (1992).
[CrossRef]

1990

G. J. Kintz, T. Baer, “Single-frequency operation in solid-state laser materials with short absorption depths,” IEEE J. Quantum Electron. 26, 1457–1459 (1990).
[CrossRef]

1988

1987

T. Y. Fan, “Modeling and CW operation of a quasi-three-level 946 nm Nd:YAG laser,” IEEE J. Quantum Electron. QE-23, 605–611 (1987).

1986

1981

Abate, J. A.

Baer, T.

G. J. Kintz, T. Baer, “Single-frequency operation in solid-state laser materials with short absorption depths,” IEEE J. Quantum Electron. 26, 1457–1459 (1990).
[CrossRef]

Baumann, M.

J. Zhang, M. Quade, K. M. Du, Y. Liao, S. Falter, M. Baumann, P. Loosen, P. Poprawe, “Efficient TEM00 operation of Nd:YVO4 laser end-pumped by fibre-coupled diode laser,” Electron. Lett. 33, 775–777 (1997).
[CrossRef]

Brown, D. C.

J. A. Abate, L. Lund, D. C. Brown, S. Jacobs, S. Refermat, J. Kelly, M. Gavin, J. Waldbillig, O. Lewis, “Active-mirror: a large-aperture medium repetition rate Nd:Glass amplifier,” Appl. Opt. 20, 351–361 (1981).
[CrossRef] [PubMed]

D. C. Brown, J. H. Kelly, J. A. Abate, “Active-mirror amplifiers: progress and prospects,” IEEE J. Quantum Electron. QE-17, 1755–1765 (1981).
[CrossRef]

D. C. Brown, “Comparison of thermal effects in end-diode-pumped solid-state lasers with end or side cooling,” IEEE J. Quantum Electron. (to be published).

Caird, J. A.

Cousins, A. K.

A. K. Cousins, “Temperature and thermal stress scaling in finite-length end-pumped laser rods,” IEEE J. Quantum Electron. 28, 1057–1069 (1992).
[CrossRef]

Du, K. M.

J. Zhang, M. Quade, K. M. Du, Y. Liao, S. Falter, M. Baumann, P. Loosen, P. Poprawe, “Efficient TEM00 operation of Nd:YVO4 laser end-pumped by fibre-coupled diode laser,” Electron. Lett. 33, 775–777 (1997).
[CrossRef]

Falter, S.

J. Zhang, M. Quade, K. M. Du, Y. Liao, S. Falter, M. Baumann, P. Loosen, P. Poprawe, “Efficient TEM00 operation of Nd:YVO4 laser end-pumped by fibre-coupled diode laser,” Electron. Lett. 33, 775–777 (1997).
[CrossRef]

Fan, T. Y.

T. Y. Fan, “Modeling and CW operation of a quasi-three-level 946 nm Nd:YAG laser,” IEEE J. Quantum Electron. QE-23, 605–611 (1987).

Fields, R. A.

R. A. Fields, T. S. Rose, M. E. Innocenzi, H. T. Yura, C. L. Fincher, “Diode laser end-pumped neodymium lasers: the road to higher powers,” in Tunable Solid state Lasers, M. L. Shand, H. P. Jenssen, eds. Vol. 5 of OSA Proceedings (Optical Society of America, Washington, D.C., 1989), pp. 301–308.

Fincher, C. L.

R. A. Fields, T. S. Rose, M. E. Innocenzi, H. T. Yura, C. L. Fincher, “Diode laser end-pumped neodymium lasers: the road to higher powers,” in Tunable Solid state Lasers, M. L. Shand, H. P. Jenssen, eds. Vol. 5 of OSA Proceedings (Optical Society of America, Washington, D.C., 1989), pp. 301–308.

Gavin, M.

Innocenzi, M. E.

R. A. Fields, T. S. Rose, M. E. Innocenzi, H. T. Yura, C. L. Fincher, “Diode laser end-pumped neodymium lasers: the road to higher powers,” in Tunable Solid state Lasers, M. L. Shand, H. P. Jenssen, eds. Vol. 5 of OSA Proceedings (Optical Society of America, Washington, D.C., 1989), pp. 301–308.

Jacobs, S.

Kasamatsu, T.

Kelly, J.

Kelly, J. H.

D. C. Brown, J. H. Kelly, J. A. Abate, “Active-mirror amplifiers: progress and prospects,” IEEE J. Quantum Electron. QE-17, 1755–1765 (1981).
[CrossRef]

Kintz, G. J.

G. J. Kintz, T. Baer, “Single-frequency operation in solid-state laser materials with short absorption depths,” IEEE J. Quantum Electron. 26, 1457–1459 (1990).
[CrossRef]

Koechner, W

W Koechner, Solid-State Laser Engineering, 4th ed., Vol. 1 of Springer-Verlag Series in Optical Sciences (Springer-Verlag, New York, 1996).

Krupke, W. F.

Lewis, O.

Liao, Y.

J. Zhang, M. Quade, K. M. Du, Y. Liao, S. Falter, M. Baumann, P. Loosen, P. Poprawe, “Efficient TEM00 operation of Nd:YVO4 laser end-pumped by fibre-coupled diode laser,” Electron. Lett. 33, 775–777 (1997).
[CrossRef]

Loosen, P.

J. Zhang, M. Quade, K. M. Du, Y. Liao, S. Falter, M. Baumann, P. Loosen, P. Poprawe, “Efficient TEM00 operation of Nd:YVO4 laser end-pumped by fibre-coupled diode laser,” Electron. Lett. 33, 775–777 (1997).
[CrossRef]

Lund, L.

Marion, J. E.

Martin, W. S.

W. S. Martin, “Face-pumped laser,” (General Electric Research and Development Center, Schenectady, New York, 1968).

Poprawe, P.

J. Zhang, M. Quade, K. M. Du, Y. Liao, S. Falter, M. Baumann, P. Loosen, P. Poprawe, “Efficient TEM00 operation of Nd:YVO4 laser end-pumped by fibre-coupled diode laser,” Electron. Lett. 33, 775–777 (1997).
[CrossRef]

Quade, M.

J. Zhang, M. Quade, K. M. Du, Y. Liao, S. Falter, M. Baumann, P. Loosen, P. Poprawe, “Efficient TEM00 operation of Nd:YVO4 laser end-pumped by fibre-coupled diode laser,” Electron. Lett. 33, 775–777 (1997).
[CrossRef]

Refermat, S.

Risk, W. P.

Rose, T. S.

R. A. Fields, T. S. Rose, M. E. Innocenzi, H. T. Yura, C. L. Fincher, “Diode laser end-pumped neodymium lasers: the road to higher powers,” in Tunable Solid state Lasers, M. L. Shand, H. P. Jenssen, eds. Vol. 5 of OSA Proceedings (Optical Society of America, Washington, D.C., 1989), pp. 301–308.

Sekita, H.

Shinn, M. D.

Stokowski, S. E.

Waldbillig, J.

Yura, H. T.

R. A. Fields, T. S. Rose, M. E. Innocenzi, H. T. Yura, C. L. Fincher, “Diode laser end-pumped neodymium lasers: the road to higher powers,” in Tunable Solid state Lasers, M. L. Shand, H. P. Jenssen, eds. Vol. 5 of OSA Proceedings (Optical Society of America, Washington, D.C., 1989), pp. 301–308.

Zhang, J.

J. Zhang, M. Quade, K. M. Du, Y. Liao, S. Falter, M. Baumann, P. Loosen, P. Poprawe, “Efficient TEM00 operation of Nd:YVO4 laser end-pumped by fibre-coupled diode laser,” Electron. Lett. 33, 775–777 (1997).
[CrossRef]

Appl. Opt.

Electron. Lett.

J. Zhang, M. Quade, K. M. Du, Y. Liao, S. Falter, M. Baumann, P. Loosen, P. Poprawe, “Efficient TEM00 operation of Nd:YVO4 laser end-pumped by fibre-coupled diode laser,” Electron. Lett. 33, 775–777 (1997).
[CrossRef]

IEEE J. Quantum Electron.

T. Y. Fan, “Modeling and CW operation of a quasi-three-level 946 nm Nd:YAG laser,” IEEE J. Quantum Electron. QE-23, 605–611 (1987).

G. J. Kintz, T. Baer, “Single-frequency operation in solid-state laser materials with short absorption depths,” IEEE J. Quantum Electron. 26, 1457–1459 (1990).
[CrossRef]

D. C. Brown, J. H. Kelly, J. A. Abate, “Active-mirror amplifiers: progress and prospects,” IEEE J. Quantum Electron. QE-17, 1755–1765 (1981).
[CrossRef]

A. K. Cousins, “Temperature and thermal stress scaling in finite-length end-pumped laser rods,” IEEE J. Quantum Electron. 28, 1057–1069 (1992).
[CrossRef]

J. Opt. Soc. Am. B

Other

R. A. Fields, T. S. Rose, M. E. Innocenzi, H. T. Yura, C. L. Fincher, “Diode laser end-pumped neodymium lasers: the road to higher powers,” in Tunable Solid state Lasers, M. L. Shand, H. P. Jenssen, eds. Vol. 5 of OSA Proceedings (Optical Society of America, Washington, D.C., 1989), pp. 301–308.

W Koechner, Solid-State Laser Engineering, 4th ed., Vol. 1 of Springer-Verlag Series in Optical Sciences (Springer-Verlag, New York, 1996).

D. C. Brown, “Comparison of thermal effects in end-diode-pumped solid-state lasers with end or side cooling,” IEEE J. Quantum Electron. (to be published).

Vanadate crystals were obtained from ITI Corp., Los Angeles, Calif.

W. S. Martin, “Face-pumped laser,” (General Electric Research and Development Center, Schenectady, New York, 1968).

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Figures (2)

Fig. 1
Fig. 1

Schematic of the end-pumped, end-cooled Nd:YVO4 diode-pumped laser.

Fig. 2
Fig. 2

Measured Nd:YVO4 cw 1064-nm output power (○) as a function of laser diode power incident upon the crystal for T = 10% outcoupling with the diode temperature optimized at 3.94 W of diode output. A maximum output power of 1.94 W was obtained for 3.94 W of diode input power. The solid line represents the predictions of a modified quasi-three-level model with a round-trip loss of 4.3%. Also shown are the measured beam-parameter products (●) for four diode input powers and the diffraction-limited beam-parameter product of 1.355 mm/mrad.

Equations (2)

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

η s = T T + L η a η QD η QE η O ,
P th = π ( ω 0 2 + ω p 2 ) h c 4 σ e τ e λ p η a η QD η QE ( L + T ) .

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