Abstract

A longitudinally fiber-pumped, passively Q-switched Nd:YAG laser oscillator–power amplifier system is reported with which a maximum pulse energy of 68mJ was achieved at high pulse stability, beam quality, and efficiency. Therefore, a compact fiber-coupling interface was developed for stacked arrays of quasi-cw diode lasers, providing a pump power of 1kW at the fiber end.

© 2006 Optical Society of America

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References

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  1. R. S. Afzal, J. L. Dallas, A. W. Yu, W. A. Mamakos, A. Lukemire, B. Schröder, and A. Melak, in Conference on Lasers and Electro-Optics (CLEO), Vol. 39 of OSA Technical Digest Series (Optical Society of America, 2000), pp. 50-51.
  2. D. J. Krebs, A.-M. Novo-Gradac, S. X. Li, S. J. Lindauer, R. S. Afzal, and A. W. Yu, Appl. Opt. 44, 1715 (2005).
    [CrossRef] [PubMed]
  3. R. S. Afzal, A. W. Yu, J. J. Zayhowski, and T. Y. Fan, Opt. Lett. 22, 1314 (1997).
    [CrossRef]
  4. R. Beach, P. Reichert, W. Benett, B. Freitas, S. Mitchell, A. Velsko, J. Davin, and R. Solarz, Opt. Lett. 18, 1326 (1993).
    [CrossRef] [PubMed]
  5. D. Andrauskas and C. Kennedy, in Advanced Solid-State Lasers, G.Dubé and L.Chase, eds., Vol. 10 of OSA Proceedings Series (Optical Society of America, 1991), p. 393.
  6. L. M. Frantz and J. S. Nodvik, J. Appl. Phys. 34, 2346 (1963).
    [CrossRef]

2005 (1)

1997 (1)

1993 (1)

1963 (1)

L. M. Frantz and J. S. Nodvik, J. Appl. Phys. 34, 2346 (1963).
[CrossRef]

Afzal, R. S.

D. J. Krebs, A.-M. Novo-Gradac, S. X. Li, S. J. Lindauer, R. S. Afzal, and A. W. Yu, Appl. Opt. 44, 1715 (2005).
[CrossRef] [PubMed]

R. S. Afzal, A. W. Yu, J. J. Zayhowski, and T. Y. Fan, Opt. Lett. 22, 1314 (1997).
[CrossRef]

R. S. Afzal, J. L. Dallas, A. W. Yu, W. A. Mamakos, A. Lukemire, B. Schröder, and A. Melak, in Conference on Lasers and Electro-Optics (CLEO), Vol. 39 of OSA Technical Digest Series (Optical Society of America, 2000), pp. 50-51.

Andrauskas, D.

D. Andrauskas and C. Kennedy, in Advanced Solid-State Lasers, G.Dubé and L.Chase, eds., Vol. 10 of OSA Proceedings Series (Optical Society of America, 1991), p. 393.

Beach, R.

Benett, W.

Dallas, J. L.

R. S. Afzal, J. L. Dallas, A. W. Yu, W. A. Mamakos, A. Lukemire, B. Schröder, and A. Melak, in Conference on Lasers and Electro-Optics (CLEO), Vol. 39 of OSA Technical Digest Series (Optical Society of America, 2000), pp. 50-51.

Davin, J.

Fan, T. Y.

Frantz, L. M.

L. M. Frantz and J. S. Nodvik, J. Appl. Phys. 34, 2346 (1963).
[CrossRef]

Freitas, B.

Kennedy, C.

D. Andrauskas and C. Kennedy, in Advanced Solid-State Lasers, G.Dubé and L.Chase, eds., Vol. 10 of OSA Proceedings Series (Optical Society of America, 1991), p. 393.

Krebs, D. J.

Li, S. X.

Lindauer, S. J.

Lukemire, A.

R. S. Afzal, J. L. Dallas, A. W. Yu, W. A. Mamakos, A. Lukemire, B. Schröder, and A. Melak, in Conference on Lasers and Electro-Optics (CLEO), Vol. 39 of OSA Technical Digest Series (Optical Society of America, 2000), pp. 50-51.

Mamakos, W. A.

R. S. Afzal, J. L. Dallas, A. W. Yu, W. A. Mamakos, A. Lukemire, B. Schröder, and A. Melak, in Conference on Lasers and Electro-Optics (CLEO), Vol. 39 of OSA Technical Digest Series (Optical Society of America, 2000), pp. 50-51.

Melak, A.

R. S. Afzal, J. L. Dallas, A. W. Yu, W. A. Mamakos, A. Lukemire, B. Schröder, and A. Melak, in Conference on Lasers and Electro-Optics (CLEO), Vol. 39 of OSA Technical Digest Series (Optical Society of America, 2000), pp. 50-51.

Mitchell, S.

Nodvik, J. S.

L. M. Frantz and J. S. Nodvik, J. Appl. Phys. 34, 2346 (1963).
[CrossRef]

Novo-Gradac, A.-M.

Reichert, P.

Schröder, B.

R. S. Afzal, J. L. Dallas, A. W. Yu, W. A. Mamakos, A. Lukemire, B. Schröder, and A. Melak, in Conference on Lasers and Electro-Optics (CLEO), Vol. 39 of OSA Technical Digest Series (Optical Society of America, 2000), pp. 50-51.

Solarz, R.

Velsko, A.

Yu, A. W.

D. J. Krebs, A.-M. Novo-Gradac, S. X. Li, S. J. Lindauer, R. S. Afzal, and A. W. Yu, Appl. Opt. 44, 1715 (2005).
[CrossRef] [PubMed]

R. S. Afzal, A. W. Yu, J. J. Zayhowski, and T. Y. Fan, Opt. Lett. 22, 1314 (1997).
[CrossRef]

R. S. Afzal, J. L. Dallas, A. W. Yu, W. A. Mamakos, A. Lukemire, B. Schröder, and A. Melak, in Conference on Lasers and Electro-Optics (CLEO), Vol. 39 of OSA Technical Digest Series (Optical Society of America, 2000), pp. 50-51.

Zayhowski, J. J.

Appl. Opt. (1)

J. Appl. Phys. (1)

L. M. Frantz and J. S. Nodvik, J. Appl. Phys. 34, 2346 (1963).
[CrossRef]

Opt. Lett. (2)

Other (2)

R. S. Afzal, J. L. Dallas, A. W. Yu, W. A. Mamakos, A. Lukemire, B. Schröder, and A. Melak, in Conference on Lasers and Electro-Optics (CLEO), Vol. 39 of OSA Technical Digest Series (Optical Society of America, 2000), pp. 50-51.

D. Andrauskas and C. Kennedy, in Advanced Solid-State Lasers, G.Dubé and L.Chase, eds., Vol. 10 of OSA Proceedings Series (Optical Society of America, 1991), p. 393.

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Figures (2)

Fig. 1
Fig. 1

Schematic layout of the MOPA with a passively Q-switched oscillator and two amplifier stages. F, fiber; LS, lens system; D, diaphragm; M, end-pumping mirror; MO, outcoupling mirror; λ 2 , retardation plate; LC/AC, laser/amplifier crystals, Q, passive Q-switch crystal; P, polarizer; FI, Faraday isolator; L, lens.

Fig. 2
Fig. 2

Pulse energy of the MOPA as a function of the pump energy of the second amplifier stage at a constant output energy of the first amplifier stage. The highest three pulse energies were measured after a slight realignment. The straight line represents the result from theoretical calculations.

Equations (3)

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E out = E sat ln { 1 + [ exp ( E in E sat ) 1 ] G ( t p ) } ,
g 0 ( t p ) = P d η t η a η o η q h ν τ [ 1 exp ( t p τ ) ] V E sat h ν p .
η ex ( I p ) = E out ( I p ) E in g 0 ( I p ) L E sat ,

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