Abstract

We report what is to our knowledge the first Nd:BaY2F8 (Nd:BaYF) laser pumped with a multiwatt fiber-coupled diode array tuned at ≈804 nm. As much as 2.4 W were obtained with 6.2 W of absorbed pump power, showing efficient operation (51% slope efficiency), excellent beam quality (M 2=1.1), and weak thermal lensing. Small intracavity losses (<1%) were measured, indicating both reduced thermally induced aberrations and good optical quality of the laser crystal.

© 2003 Optical Society of America

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  1. W. A. Clarkson, P. J. Hardman, and D. C. Hanna, “High-power diode-bar end-pumped Nd:YLF laser at 1.053 µm,” Opt. Lett. 23, 1363–1365 (1998).
    [Crossref]
  2. H. J. Eichler, J. Findeisen, B. Liu, A. A. Kaminskii, A. V. Butachin, and P. Peuser, “Highly efficient diode-pumped 3-µm Er3+:BaY2F8 laser” IEEE J. Quantum Electron. 3, 90–94 (1997).
    [Crossref]
  3. A. A. Kaminskii, “New room-temperature diode-laser-pumped efficient quasi-cw and cw single-mode laser based on monoclinic BaY2F8:Nd3+ crystal,” Phys. Stat. Sol. A 137, 61–63 (1993).
    [Crossref]
  4. N. P. Barnes, K. E. Murray, A. Cassanho, K. M. Dinndorf, and H. P. Jenssen, “Flashlamp pumped Nd:BaY2F8,” in OSA Proceedings on Advanced Solid-State Lasers, A. A. Pinto and T. Y. Fan, eds., Vol. 15 (Optical Society of America, Washington, D.C., 1993), pp. 24–27.
  5. J. J. Zayhowski and J. Harrison, in Handbook of Photonics, M. C. Gupta, ed. (CRC Press, Boca Raton, Fla., 1997), pp. 326–392.
  6. A. Agnesi, A. Guandalini, G. Reali, E. Sani, A. Toncelli, and M. Tonelli, “Spectroscopic analysis and diode pumped laser results of Nd: BaY2F8,” IEEE J. of Quantum Electron. (to be published).
  7. A. Agnesi and P. Uggetti, “Measurement of thermal diffractive losses in end-pumped solid-state lasers,” Opt. Commun. 212, 371–376 (2002).
    [Crossref]
  8. A. E. Siegman, Lasers (University Science, Mill Valley, Calif., 1986).
  9. Y. F. Chen, T. M. Huang, C. F. Kao, C. L. Wang, and S. C. Wang, “Optimization in scaling fiber-coupled laser-diode end-pumped lasers to higher power: influence of thermal effect,” IEEE J. Quantum Electron. 33, 1424–1429 (1997).
    [Crossref]
  10. S. C. Tidwell, J. F. Seamans, M. S. Bowers, and A. K. Cousins, “Scaling cw diode-end-pumped Nd:YAG lasers to high average powers,” IEEE J. Quantum Electron. 28, 997–1009 (1992).
    [Crossref]
  11. E. J. Grace, G. H. C. New, and P. M. W. French, “Simple ABCD matrix treatment for transversely varying saturable gain,” Opt. Lett. 26, 1776–1778 (2001).
    [Crossref]
  12. C. Pfistner, R. Weber, H. P. Weber, S. Merazzi, and 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]
  13. Y.-F. Chen, “Design criteria for concentration optimization in scaling diode end-pumped lasers to high powers: influence of thermal fracture,” IEEE J. Quantum Electron. 35, 234–239 (1999).
    [Crossref]

2002 (1)

A. Agnesi and P. Uggetti, “Measurement of thermal diffractive losses in end-pumped solid-state lasers,” Opt. Commun. 212, 371–376 (2002).
[Crossref]

2001 (1)

1999 (1)

Y.-F. Chen, “Design criteria for concentration optimization in scaling diode end-pumped lasers to high powers: influence of thermal fracture,” IEEE J. Quantum Electron. 35, 234–239 (1999).
[Crossref]

1998 (1)

1997 (2)

H. J. Eichler, J. Findeisen, B. Liu, A. A. Kaminskii, A. V. Butachin, and P. Peuser, “Highly efficient diode-pumped 3-µm Er3+:BaY2F8 laser” IEEE J. Quantum Electron. 3, 90–94 (1997).
[Crossref]

Y. F. Chen, T. M. Huang, C. F. Kao, C. L. Wang, and S. C. Wang, “Optimization in scaling fiber-coupled laser-diode end-pumped lasers to higher power: influence of thermal effect,” IEEE J. Quantum Electron. 33, 1424–1429 (1997).
[Crossref]

1994 (1)

C. Pfistner, R. Weber, H. P. Weber, S. Merazzi, and 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 (1)

A. A. Kaminskii, “New room-temperature diode-laser-pumped efficient quasi-cw and cw single-mode laser based on monoclinic BaY2F8:Nd3+ crystal,” Phys. Stat. Sol. A 137, 61–63 (1993).
[Crossref]

1992 (1)

S. C. Tidwell, J. F. Seamans, M. S. Bowers, and A. K. Cousins, “Scaling cw diode-end-pumped Nd:YAG lasers to high average powers,” IEEE J. Quantum Electron. 28, 997–1009 (1992).
[Crossref]

Agnesi, A.

A. Agnesi and P. Uggetti, “Measurement of thermal diffractive losses in end-pumped solid-state lasers,” Opt. Commun. 212, 371–376 (2002).
[Crossref]

A. Agnesi, A. Guandalini, G. Reali, E. Sani, A. Toncelli, and M. Tonelli, “Spectroscopic analysis and diode pumped laser results of Nd: BaY2F8,” IEEE J. of Quantum Electron. (to be published).

Barnes, N. P.

N. P. Barnes, K. E. Murray, A. Cassanho, K. M. Dinndorf, and H. P. Jenssen, “Flashlamp pumped Nd:BaY2F8,” in OSA Proceedings on Advanced Solid-State Lasers, A. A. Pinto and T. Y. Fan, eds., Vol. 15 (Optical Society of America, Washington, D.C., 1993), pp. 24–27.

Bowers, M. S.

S. C. Tidwell, J. F. Seamans, M. S. Bowers, and A. K. Cousins, “Scaling cw diode-end-pumped Nd:YAG lasers to high average powers,” IEEE J. Quantum Electron. 28, 997–1009 (1992).
[Crossref]

Butachin, A. V.

H. J. Eichler, J. Findeisen, B. Liu, A. A. Kaminskii, A. V. Butachin, and P. Peuser, “Highly efficient diode-pumped 3-µm Er3+:BaY2F8 laser” IEEE J. Quantum Electron. 3, 90–94 (1997).
[Crossref]

Cassanho, A.

N. P. Barnes, K. E. Murray, A. Cassanho, K. M. Dinndorf, and H. P. Jenssen, “Flashlamp pumped Nd:BaY2F8,” in OSA Proceedings on Advanced Solid-State Lasers, A. A. Pinto and T. Y. Fan, eds., Vol. 15 (Optical Society of America, Washington, D.C., 1993), pp. 24–27.

Chen, Y. F.

Y. F. Chen, T. M. Huang, C. F. Kao, C. L. Wang, and S. C. Wang, “Optimization in scaling fiber-coupled laser-diode end-pumped lasers to higher power: influence of thermal effect,” IEEE J. Quantum Electron. 33, 1424–1429 (1997).
[Crossref]

Chen, Y.-F.

Y.-F. Chen, “Design criteria for concentration optimization in scaling diode end-pumped lasers to high powers: influence of thermal fracture,” IEEE J. Quantum Electron. 35, 234–239 (1999).
[Crossref]

Clarkson, W. A.

Cousins, A. K.

S. C. Tidwell, J. F. Seamans, M. S. Bowers, and A. K. Cousins, “Scaling cw diode-end-pumped Nd:YAG lasers to high average powers,” IEEE J. Quantum Electron. 28, 997–1009 (1992).
[Crossref]

Dinndorf, K. M.

N. P. Barnes, K. E. Murray, A. Cassanho, K. M. Dinndorf, and H. P. Jenssen, “Flashlamp pumped Nd:BaY2F8,” in OSA Proceedings on Advanced Solid-State Lasers, A. A. Pinto and T. Y. Fan, eds., Vol. 15 (Optical Society of America, Washington, D.C., 1993), pp. 24–27.

Eichler, H. J.

H. J. Eichler, J. Findeisen, B. Liu, A. A. Kaminskii, A. V. Butachin, and P. Peuser, “Highly efficient diode-pumped 3-µm Er3+:BaY2F8 laser” IEEE J. Quantum Electron. 3, 90–94 (1997).
[Crossref]

Findeisen, J.

H. J. Eichler, J. Findeisen, B. Liu, A. A. Kaminskii, A. V. Butachin, and P. Peuser, “Highly efficient diode-pumped 3-µm Er3+:BaY2F8 laser” IEEE J. Quantum Electron. 3, 90–94 (1997).
[Crossref]

French, P. M. W.

Grace, E. J.

Gruber, R.

C. Pfistner, R. Weber, H. P. Weber, S. Merazzi, and 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]

Guandalini, A.

A. Agnesi, A. Guandalini, G. Reali, E. Sani, A. Toncelli, and M. Tonelli, “Spectroscopic analysis and diode pumped laser results of Nd: BaY2F8,” IEEE J. of Quantum Electron. (to be published).

Hanna, D. C.

Hardman, P. J.

Harrison, J.

J. J. Zayhowski and J. Harrison, in Handbook of Photonics, M. C. Gupta, ed. (CRC Press, Boca Raton, Fla., 1997), pp. 326–392.

Huang, T. M.

Y. F. Chen, T. M. Huang, C. F. Kao, C. L. Wang, and S. C. Wang, “Optimization in scaling fiber-coupled laser-diode end-pumped lasers to higher power: influence of thermal effect,” IEEE J. Quantum Electron. 33, 1424–1429 (1997).
[Crossref]

Jenssen, H. P.

N. P. Barnes, K. E. Murray, A. Cassanho, K. M. Dinndorf, and H. P. Jenssen, “Flashlamp pumped Nd:BaY2F8,” in OSA Proceedings on Advanced Solid-State Lasers, A. A. Pinto and T. Y. Fan, eds., Vol. 15 (Optical Society of America, Washington, D.C., 1993), pp. 24–27.

Kaminskii, A. A.

H. J. Eichler, J. Findeisen, B. Liu, A. A. Kaminskii, A. V. Butachin, and P. Peuser, “Highly efficient diode-pumped 3-µm Er3+:BaY2F8 laser” IEEE J. Quantum Electron. 3, 90–94 (1997).
[Crossref]

A. A. Kaminskii, “New room-temperature diode-laser-pumped efficient quasi-cw and cw single-mode laser based on monoclinic BaY2F8:Nd3+ crystal,” Phys. Stat. Sol. A 137, 61–63 (1993).
[Crossref]

Kao, C. F.

Y. F. Chen, T. M. Huang, C. F. Kao, C. L. Wang, and S. C. Wang, “Optimization in scaling fiber-coupled laser-diode end-pumped lasers to higher power: influence of thermal effect,” IEEE J. Quantum Electron. 33, 1424–1429 (1997).
[Crossref]

Liu, B.

H. J. Eichler, J. Findeisen, B. Liu, A. A. Kaminskii, A. V. Butachin, and P. Peuser, “Highly efficient diode-pumped 3-µm Er3+:BaY2F8 laser” IEEE J. Quantum Electron. 3, 90–94 (1997).
[Crossref]

Merazzi, S.

C. Pfistner, R. Weber, H. P. Weber, S. Merazzi, and 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, K. E.

N. P. Barnes, K. E. Murray, A. Cassanho, K. M. Dinndorf, and H. P. Jenssen, “Flashlamp pumped Nd:BaY2F8,” in OSA Proceedings on Advanced Solid-State Lasers, A. A. Pinto and T. Y. Fan, eds., Vol. 15 (Optical Society of America, Washington, D.C., 1993), pp. 24–27.

New, G. H. C.

Peuser, P.

H. J. Eichler, J. Findeisen, B. Liu, A. A. Kaminskii, A. V. Butachin, and P. Peuser, “Highly efficient diode-pumped 3-µm Er3+:BaY2F8 laser” IEEE J. Quantum Electron. 3, 90–94 (1997).
[Crossref]

Pfistner, C.

C. Pfistner, R. Weber, H. P. Weber, S. Merazzi, and 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]

Reali, G.

A. Agnesi, A. Guandalini, G. Reali, E. Sani, A. Toncelli, and M. Tonelli, “Spectroscopic analysis and diode pumped laser results of Nd: BaY2F8,” IEEE J. of Quantum Electron. (to be published).

Sani, E.

A. Agnesi, A. Guandalini, G. Reali, E. Sani, A. Toncelli, and M. Tonelli, “Spectroscopic analysis and diode pumped laser results of Nd: BaY2F8,” IEEE J. of Quantum Electron. (to be published).

Seamans, J. F.

S. C. Tidwell, J. F. Seamans, M. S. Bowers, and A. K. Cousins, “Scaling cw diode-end-pumped Nd:YAG lasers to high average powers,” IEEE J. Quantum Electron. 28, 997–1009 (1992).
[Crossref]

Siegman, A. E.

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

Tidwell, S. C.

S. C. Tidwell, J. F. Seamans, M. S. Bowers, and A. K. Cousins, “Scaling cw diode-end-pumped Nd:YAG lasers to high average powers,” IEEE J. Quantum Electron. 28, 997–1009 (1992).
[Crossref]

Toncelli, A.

A. Agnesi, A. Guandalini, G. Reali, E. Sani, A. Toncelli, and M. Tonelli, “Spectroscopic analysis and diode pumped laser results of Nd: BaY2F8,” IEEE J. of Quantum Electron. (to be published).

Tonelli, M.

A. Agnesi, A. Guandalini, G. Reali, E. Sani, A. Toncelli, and M. Tonelli, “Spectroscopic analysis and diode pumped laser results of Nd: BaY2F8,” IEEE J. of Quantum Electron. (to be published).

Uggetti, P.

A. Agnesi and P. Uggetti, “Measurement of thermal diffractive losses in end-pumped solid-state lasers,” Opt. Commun. 212, 371–376 (2002).
[Crossref]

Wang, C. L.

Y. F. Chen, T. M. Huang, C. F. Kao, C. L. Wang, and S. C. Wang, “Optimization in scaling fiber-coupled laser-diode end-pumped lasers to higher power: influence of thermal effect,” IEEE J. Quantum Electron. 33, 1424–1429 (1997).
[Crossref]

Wang, S. C.

Y. F. Chen, T. M. Huang, C. F. Kao, C. L. Wang, and S. C. Wang, “Optimization in scaling fiber-coupled laser-diode end-pumped lasers to higher power: influence of thermal effect,” IEEE J. Quantum Electron. 33, 1424–1429 (1997).
[Crossref]

Weber, H. P.

C. Pfistner, R. Weber, H. P. Weber, S. Merazzi, and 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, and 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]

Zayhowski, J. J.

J. J. Zayhowski and J. Harrison, in Handbook of Photonics, M. C. Gupta, ed. (CRC Press, Boca Raton, Fla., 1997), pp. 326–392.

IEEE J. Quantum Electron. (5)

H. J. Eichler, J. Findeisen, B. Liu, A. A. Kaminskii, A. V. Butachin, and P. Peuser, “Highly efficient diode-pumped 3-µm Er3+:BaY2F8 laser” IEEE J. Quantum Electron. 3, 90–94 (1997).
[Crossref]

Y. F. Chen, T. M. Huang, C. F. Kao, C. L. Wang, and S. C. Wang, “Optimization in scaling fiber-coupled laser-diode end-pumped lasers to higher power: influence of thermal effect,” IEEE J. Quantum Electron. 33, 1424–1429 (1997).
[Crossref]

S. C. Tidwell, J. F. Seamans, M. S. Bowers, and A. K. Cousins, “Scaling cw diode-end-pumped Nd:YAG lasers to high average powers,” IEEE J. Quantum Electron. 28, 997–1009 (1992).
[Crossref]

C. Pfistner, R. Weber, H. P. Weber, S. Merazzi, and 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]

Y.-F. Chen, “Design criteria for concentration optimization in scaling diode end-pumped lasers to high powers: influence of thermal fracture,” IEEE J. Quantum Electron. 35, 234–239 (1999).
[Crossref]

Opt. Commun. (1)

A. Agnesi and P. Uggetti, “Measurement of thermal diffractive losses in end-pumped solid-state lasers,” Opt. Commun. 212, 371–376 (2002).
[Crossref]

Opt. Lett. (2)

Phys. Stat. Sol. A (1)

A. A. Kaminskii, “New room-temperature diode-laser-pumped efficient quasi-cw and cw single-mode laser based on monoclinic BaY2F8:Nd3+ crystal,” Phys. Stat. Sol. A 137, 61–63 (1993).
[Crossref]

Other (4)

N. P. Barnes, K. E. Murray, A. Cassanho, K. M. Dinndorf, and H. P. Jenssen, “Flashlamp pumped Nd:BaY2F8,” in OSA Proceedings on Advanced Solid-State Lasers, A. A. Pinto and T. Y. Fan, eds., Vol. 15 (Optical Society of America, Washington, D.C., 1993), pp. 24–27.

J. J. Zayhowski and J. Harrison, in Handbook of Photonics, M. C. Gupta, ed. (CRC Press, Boca Raton, Fla., 1997), pp. 326–392.

A. Agnesi, A. Guandalini, G. Reali, E. Sani, A. Toncelli, and M. Tonelli, “Spectroscopic analysis and diode pumped laser results of Nd: BaY2F8,” IEEE J. of Quantum Electron. (to be published).

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

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Figures (3)

Fig. 1.
Fig. 1.

Output power as a function of the absorbed input power. The slope efficiency η for each output coupler is given. The curve with the output coupler reflectivity R=90% was obtained eventually by pumping the crystal until some optical damage occurred.

Fig. 2.
Fig. 2.

Thermal focal length values measured in Nd:BaYF, Nd:YVO4 and numerical results.

Fig. 3.
Fig. 3.

Comparison between the intracavity passive loss values determined experimentally in Nd:BaYF, Nd:YVO4 and the numerical results. The total loss L is calculated as the sum of a background constant loss L 0(≈0.25% for Nd:BaYF and ≈0.1% for Nd:YVO4) and the power-dependent diffractive contribution Ld from Eq. (7).

Equations (7)

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P o = ( 1 R ) P sat 2 ( 1 R + L ) [ g 0 + ln ( R L ) ]
W p ( z ) = W p 0 + λ p M p 2 π n p W p 0 z z 0
Δ T ( r , z ) = ξ P abs 4 π K c α eff e α eff z ( 1 e α eff l ) { [ ( 1 r 2 W p 2 ) + ln ( r b 2 W p 2 ) ] Θ ( u ) + ln ( r b 2 r 2 ) Θ ( u ) }
Δ φ ( r ) = φ ( r ) φ ( 0 ) γ r 2
φ ( r ) = 4 π λ χ 0 l Δ T ( r , z ) d z
L d 4 w g 2 [ 0 r b ( Δ φ ) 2 e 2 r 2 w g 2 r dr ( 0 r b Δ φ e 2 r 2 w g 2 r dr ) 2 ]
f th = 2 π λ γ

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