Abstract

We report on a Nd:YLF laser that is end pumped by a quasi-cw diode-laser bar. A fiber-optic coupler was developed to collimate and transform the cross section of the diode-laser radiation for increased spatial overlap with the TEM00 mode of the Nd:YLF laser. With 12.3-mJ, 200- μs pump pulses, an optical-to-optical efficiency of 25% and a slope efficiency of 28% were obtained in free-running operation. In Q-switched operation with 19.25-mJ, 400-μs pump pulses, peak powers as high as 210 kW with 3-mJ pulse energy were obtained.

© 1993 Optical Society of America

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References

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  1. W. Hughes, A. Hays, D. DiBiase, J. Kasinski, R. Burnham, in Digest of Meeting on Advanced Solid-State Lasers (Optical Society of America, Washington, D.C., 1990), paper TuA1.
  2. C. F. Rae, J. A. C. Terry, B. D. Sinclair, M. H. Dunn, W. Sibbett, Opt. Lett. 17, 1673 (1992).
    [CrossRef] [PubMed]
  3. H. Zbinden, J. E. Balmer, Opt. Lett. 15, 1014 (1990).
    [CrossRef] [PubMed]
  4. P. J. Morris, W. Lüthy, H. P. Weber, “High-intensity rectangular fiber-coupled diode laser for solid-state laser pumping,” Appl. Opt. (to be published).
  5. D. Findlay, R. A. Clay, Phys. Lett. 20, 3 (1966).
  6. W. Koechner, Solid-State Laser Engineering, 3rd ed. (Springer-Verlag, New York, 1992), Chap. 2, p. 60.

1992

1990

1966

D. Findlay, R. A. Clay, Phys. Lett. 20, 3 (1966).

Balmer, J. E.

Burnham, R.

W. Hughes, A. Hays, D. DiBiase, J. Kasinski, R. Burnham, in Digest of Meeting on Advanced Solid-State Lasers (Optical Society of America, Washington, D.C., 1990), paper TuA1.

Clay, R. A.

D. Findlay, R. A. Clay, Phys. Lett. 20, 3 (1966).

DiBiase, D.

W. Hughes, A. Hays, D. DiBiase, J. Kasinski, R. Burnham, in Digest of Meeting on Advanced Solid-State Lasers (Optical Society of America, Washington, D.C., 1990), paper TuA1.

Dunn, M. H.

Findlay, D.

D. Findlay, R. A. Clay, Phys. Lett. 20, 3 (1966).

Hays, A.

W. Hughes, A. Hays, D. DiBiase, J. Kasinski, R. Burnham, in Digest of Meeting on Advanced Solid-State Lasers (Optical Society of America, Washington, D.C., 1990), paper TuA1.

Hughes, W.

W. Hughes, A. Hays, D. DiBiase, J. Kasinski, R. Burnham, in Digest of Meeting on Advanced Solid-State Lasers (Optical Society of America, Washington, D.C., 1990), paper TuA1.

Kasinski, J.

W. Hughes, A. Hays, D. DiBiase, J. Kasinski, R. Burnham, in Digest of Meeting on Advanced Solid-State Lasers (Optical Society of America, Washington, D.C., 1990), paper TuA1.

Koechner, W.

W. Koechner, Solid-State Laser Engineering, 3rd ed. (Springer-Verlag, New York, 1992), Chap. 2, p. 60.

Lüthy, W.

P. J. Morris, W. Lüthy, H. P. Weber, “High-intensity rectangular fiber-coupled diode laser for solid-state laser pumping,” Appl. Opt. (to be published).

Morris, P. J.

P. J. Morris, W. Lüthy, H. P. Weber, “High-intensity rectangular fiber-coupled diode laser for solid-state laser pumping,” Appl. Opt. (to be published).

Rae, C. F.

Sibbett, W.

Sinclair, B. D.

Terry, J. A. C.

Weber, H. P.

P. J. Morris, W. Lüthy, H. P. Weber, “High-intensity rectangular fiber-coupled diode laser for solid-state laser pumping,” Appl. Opt. (to be published).

Zbinden, H.

Opt. Lett.

Phys. Lett.

D. Findlay, R. A. Clay, Phys. Lett. 20, 3 (1966).

Other

W. Koechner, Solid-State Laser Engineering, 3rd ed. (Springer-Verlag, New York, 1992), Chap. 2, p. 60.

W. Hughes, A. Hays, D. DiBiase, J. Kasinski, R. Burnham, in Digest of Meeting on Advanced Solid-State Lasers (Optical Society of America, Washington, D.C., 1990), paper TuA1.

P. J. Morris, W. Lüthy, H. P. Weber, “High-intensity rectangular fiber-coupled diode laser for solid-state laser pumping,” Appl. Opt. (to be published).

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Figures (5)

Fig. 1
Fig. 1

Computed and measured energy distribution in the far field of the collimating fiber lens.

Fig. 2
Fig. 2

Computed energy distribution perpendicular to the lens axis at a distance of 0.24 times the lens diameter (D) from the lens.

Fig. 3
Fig. 3

Experimental setup of the Q-switched Nd:YLF laser.

Fig. 4
Fig. 4

Q-switched pulse obtained with an output coupler with 82% reflectivity.

Fig. 5
Fig. 5

Computed and measured slope efficiency with different output mirrors of the Q-switched Nd:YLF laser.

Tables (1)

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Table 1 Results of the Q-Switched Nd.YLF Laser

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