Abstract

A new technique for face pumping of slab lasers uses transfer of light from 10 quasi-cw laser diode bars through a slotted mirror into a rectangular, highly reflective pump chamber, giving efficient multipass pumping of a thin Nd:glass slab laser. A slope efficiency of 28% and a maximum pulse energy of 65 mJ have been obtained, and gain and loss measurements with thickness t = 0.45–1.04 mm have confirmed the 1/t scaling of gain in thin slabs and the high efficiency of pump light transfer.

© 1996 Optical Society of America

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References

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  1. W. Koechner, Solid-State Laser Engineering, 2nd ed. (Springer-Verlag, Berlin, 1988), Chaps. 6.3 and 7.3.
  2. J. M. Eggleston, T. J. Kane, K. Kuhn, J. Unternahrer, R. L. Byer, IEEE J. Quantum Electron. QE-20,189(1984).
  3. D. W. Hughes, J. R. M. Barr, J. Phys. D 25, 563 (1992).
    [CrossRef]
  4. A. Ishimori, T. Yamamoto, T. Uchiumi, S. Yagi, K. Shigihara, Opt. Lett. 17, 40 (1992).
    [CrossRef] [PubMed]
  5. A. Faulstich, H. J. Baker, D. R. Hall, in Advanced Solid State Lasers, B. H. T. Chai, S. A. Payne, Vol. 24 of OSA Proceedings Series (Optical Society of America, Washington, D.C., 1995), pp. 239–242.
  6. H. Ajer, S. Landrø, G. Rustad, K. Stenersen, Opt. Lett. 17, 1785 (1992).
    [CrossRef] [PubMed]
  7. D. Findlay, R. A. Clay, Phys. Lett. 20, 277 (1966).
    [CrossRef]
  8. A. Giesen, H. Hügel, A. Voss, K. Wittig, U. Brauch, H. Opower, Appl. Phys. B 58, 365 (1994).
    [CrossRef]
  9. P. E. Jackson, H. J. Baker, D. R. Hall, Appl. Phys. Lett. 54, 1950 (1989).

1994

A. Giesen, H. Hügel, A. Voss, K. Wittig, U. Brauch, H. Opower, Appl. Phys. B 58, 365 (1994).
[CrossRef]

1992

1989

P. E. Jackson, H. J. Baker, D. R. Hall, Appl. Phys. Lett. 54, 1950 (1989).

1984

J. M. Eggleston, T. J. Kane, K. Kuhn, J. Unternahrer, R. L. Byer, IEEE J. Quantum Electron. QE-20,189(1984).

1966

D. Findlay, R. A. Clay, Phys. Lett. 20, 277 (1966).
[CrossRef]

Ajer, H.

Baker, H. J.

P. E. Jackson, H. J. Baker, D. R. Hall, Appl. Phys. Lett. 54, 1950 (1989).

A. Faulstich, H. J. Baker, D. R. Hall, in Advanced Solid State Lasers, B. H. T. Chai, S. A. Payne, Vol. 24 of OSA Proceedings Series (Optical Society of America, Washington, D.C., 1995), pp. 239–242.

Barr, J. R. M.

D. W. Hughes, J. R. M. Barr, J. Phys. D 25, 563 (1992).
[CrossRef]

Brauch, U.

A. Giesen, H. Hügel, A. Voss, K. Wittig, U. Brauch, H. Opower, Appl. Phys. B 58, 365 (1994).
[CrossRef]

Byer, R. L.

J. M. Eggleston, T. J. Kane, K. Kuhn, J. Unternahrer, R. L. Byer, IEEE J. Quantum Electron. QE-20,189(1984).

Clay, R. A.

D. Findlay, R. A. Clay, Phys. Lett. 20, 277 (1966).
[CrossRef]

Eggleston, J. M.

J. M. Eggleston, T. J. Kane, K. Kuhn, J. Unternahrer, R. L. Byer, IEEE J. Quantum Electron. QE-20,189(1984).

Faulstich, A.

A. Faulstich, H. J. Baker, D. R. Hall, in Advanced Solid State Lasers, B. H. T. Chai, S. A. Payne, Vol. 24 of OSA Proceedings Series (Optical Society of America, Washington, D.C., 1995), pp. 239–242.

Findlay, D.

D. Findlay, R. A. Clay, Phys. Lett. 20, 277 (1966).
[CrossRef]

Giesen, A.

A. Giesen, H. Hügel, A. Voss, K. Wittig, U. Brauch, H. Opower, Appl. Phys. B 58, 365 (1994).
[CrossRef]

Hall, D. R.

P. E. Jackson, H. J. Baker, D. R. Hall, Appl. Phys. Lett. 54, 1950 (1989).

A. Faulstich, H. J. Baker, D. R. Hall, in Advanced Solid State Lasers, B. H. T. Chai, S. A. Payne, Vol. 24 of OSA Proceedings Series (Optical Society of America, Washington, D.C., 1995), pp. 239–242.

Hügel, H.

A. Giesen, H. Hügel, A. Voss, K. Wittig, U. Brauch, H. Opower, Appl. Phys. B 58, 365 (1994).
[CrossRef]

Hughes, D. W.

D. W. Hughes, J. R. M. Barr, J. Phys. D 25, 563 (1992).
[CrossRef]

Ishimori, A.

Jackson, P. E.

P. E. Jackson, H. J. Baker, D. R. Hall, Appl. Phys. Lett. 54, 1950 (1989).

Kane, T. J.

J. M. Eggleston, T. J. Kane, K. Kuhn, J. Unternahrer, R. L. Byer, IEEE J. Quantum Electron. QE-20,189(1984).

Koechner, W.

W. Koechner, Solid-State Laser Engineering, 2nd ed. (Springer-Verlag, Berlin, 1988), Chaps. 6.3 and 7.3.

Kuhn, K.

J. M. Eggleston, T. J. Kane, K. Kuhn, J. Unternahrer, R. L. Byer, IEEE J. Quantum Electron. QE-20,189(1984).

Landrø, S.

Opower, H.

A. Giesen, H. Hügel, A. Voss, K. Wittig, U. Brauch, H. Opower, Appl. Phys. B 58, 365 (1994).
[CrossRef]

Rustad, G.

Shigihara, K.

Stenersen, K.

Uchiumi, T.

Unternahrer, J.

J. M. Eggleston, T. J. Kane, K. Kuhn, J. Unternahrer, R. L. Byer, IEEE J. Quantum Electron. QE-20,189(1984).

Voss, A.

A. Giesen, H. Hügel, A. Voss, K. Wittig, U. Brauch, H. Opower, Appl. Phys. B 58, 365 (1994).
[CrossRef]

Wittig, K.

A. Giesen, H. Hügel, A. Voss, K. Wittig, U. Brauch, H. Opower, Appl. Phys. B 58, 365 (1994).
[CrossRef]

Yagi, S.

Yamamoto, T.

Appl. Phys. B

A. Giesen, H. Hügel, A. Voss, K. Wittig, U. Brauch, H. Opower, Appl. Phys. B 58, 365 (1994).
[CrossRef]

Appl. Phys. Lett.

P. E. Jackson, H. J. Baker, D. R. Hall, Appl. Phys. Lett. 54, 1950 (1989).

IEEE J. Quantum Electron

J. M. Eggleston, T. J. Kane, K. Kuhn, J. Unternahrer, R. L. Byer, IEEE J. Quantum Electron. QE-20,189(1984).

J. Phys. D

D. W. Hughes, J. R. M. Barr, J. Phys. D 25, 563 (1992).
[CrossRef]

Opt. Lett.

Phys. Lett.

D. Findlay, R. A. Clay, Phys. Lett. 20, 277 (1966).
[CrossRef]

Other

A. Faulstich, H. J. Baker, D. R. Hall, in Advanced Solid State Lasers, B. H. T. Chai, S. A. Payne, Vol. 24 of OSA Proceedings Series (Optical Society of America, Washington, D.C., 1995), pp. 239–242.

W. Koechner, Solid-State Laser Engineering, 2nd ed. (Springer-Verlag, Berlin, 1988), Chaps. 6.3 and 7.3.

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Figures (4)

Fig. 1
Fig. 1

(a) Exploded view of the laser pump chamber. (b) Path of a pump ray through the chamber from the laser diode bars (LD’s).

Fig. 2
Fig. 2

Transfer efficiency calculations for (a) gold coating, 280-μm slot width; (b) gold coating, 100-μm slot width; (c) dielectric coating, 100-μm slot width.

Fig. 3
Fig. 3

Output energy versus pump pulse energy for three slab thicknesses (600-μs pulse duration).

Fig. 4
Fig. 4

Findlay–Clay plots and fitted lines for slabs of thicknesses 0.45, 0.60, and 1.04 mm.

Equations (3)

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f ( λ ) = { 1 - exp [ - α ( λ ) t ] } { 1 + R 1 exp [ - α ( λ ) t ] } 1 - R eff R 1 exp [ - α ( λ ) t ] ,
η trans = λ S ( λ ) f ( λ ) d λ .
P th = w t ( h ν ) pump 2 τ σ se η trans [ - ln ( R ) - ln ( T c ) ] ,

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