Abstract

We demonstrate that appropriately designed doped multimode fibers provide robust single-mode output when used within a fiber laser cavity. Using a novel large-mode-area fiber, we demonstrate what we believe to be record single-mode M2<1.2 pulse energies of >0.5 mJ from a Q-switched fiber laser and even higher pulse energies (as high as 0.85 mJ) with slightly compromised spatial-mode quality M2<2.0. This approach offers significant scope for extending the range of single-mode output powers and energies that are achievable from fiber-laser–amplifier systems.

© 1998 Optical Society of America

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    [CrossRef]
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1998 (1)

1997 (2)

D. Taverner, D. J. Richardson, L. Dong, J. E. Caplen, K. Williams, and R. Penty, Opt. Lett. 22, 268 (1997).
[CrossRef]

D. J. Richardson, P. Britton, and D. Taverner, Electron. Lett. 31, 393 (1997).

1995 (1)

G. P. Lees, A. Hartog, A. Leach, and T. P. Newson, Electron. Lett. 31, 1836 (1995).
[CrossRef]

1993 (3)

J. Nilsson and B. Jaskorzynska, Opt. Lett. 18, 2099 (1993).
[CrossRef]

F. Seguin and T. Oleskevich, Opt. Eng. 32, 2036 (1993).
[CrossRef]

A. Chandonnet and G. Larose, Opt. Eng. 32, 2031 (1993).
[CrossRef]

1986 (1)

R. J. Mears, L. Reekie, S. B. Poole, and D. N. Payne, Electron. Lett. 22, 159 (1986).
[CrossRef]

1975 (1)

Britton, P.

D. J. Richardson, P. Britton, and D. Taverner, Electron. Lett. 31, 393 (1997).

Caplen, J. C.

J. D. Minelly, Z. J. Chen, R. J. Laming, and J. C. Caplen, in Proceedings of the 21st European Conference on Optical Communication (IMEC vzw, INTEC Department, Ghent, Belgium, 1995), pp. 917–920.

Caplen, J. E.

Chandonnet, A.

A. Chandonnet and G. Larose, Opt. Eng. 32, 2031 (1993).
[CrossRef]

Chen, Z. J.

J. D. Minelly, Z. J. Chen, R. J. Laming, and J. C. Caplen, in Proceedings of the 21st European Conference on Optical Communication (IMEC vzw, INTEC Department, Ghent, Belgium, 1995), pp. 917–920.

Dong, L.

Fermann, M. E.

Hartog, A.

G. P. Lees, A. Hartog, A. Leach, and T. P. Newson, Electron. Lett. 31, 1836 (1995).
[CrossRef]

Jaskorzynska, B.

Laming, R. J.

J. D. Minelly, Z. J. Chen, R. J. Laming, and J. C. Caplen, in Proceedings of the 21st European Conference on Optical Communication (IMEC vzw, INTEC Department, Ghent, Belgium, 1995), pp. 917–920.

Larose, G.

A. Chandonnet and G. Larose, Opt. Eng. 32, 2031 (1993).
[CrossRef]

Leach, A.

G. P. Lees, A. Hartog, A. Leach, and T. P. Newson, Electron. Lett. 31, 1836 (1995).
[CrossRef]

Lees, G. P.

G. P. Lees, A. Hartog, A. Leach, and T. P. Newson, Electron. Lett. 31, 1836 (1995).
[CrossRef]

Mears, R. J.

R. J. Mears, L. Reekie, S. B. Poole, and D. N. Payne, Electron. Lett. 22, 159 (1986).
[CrossRef]

Minelly, J. D.

J. D. Minelly, Z. J. Chen, R. J. Laming, and J. C. Caplen, in Proceedings of the 21st European Conference on Optical Communication (IMEC vzw, INTEC Department, Ghent, Belgium, 1995), pp. 917–920.

Newson, T. P.

G. P. Lees, A. Hartog, A. Leach, and T. P. Newson, Electron. Lett. 31, 1836 (1995).
[CrossRef]

Nilsson, J.

Oleskevich, T.

F. Seguin and T. Oleskevich, Opt. Eng. 32, 2036 (1993).
[CrossRef]

Olshansky, R.

Payne, D. N.

R. J. Mears, L. Reekie, S. B. Poole, and D. N. Payne, Electron. Lett. 22, 159 (1986).
[CrossRef]

Penty, R.

Poole, S. B.

R. J. Mears, L. Reekie, S. B. Poole, and D. N. Payne, Electron. Lett. 22, 159 (1986).
[CrossRef]

Reekie, L.

R. J. Mears, L. Reekie, S. B. Poole, and D. N. Payne, Electron. Lett. 22, 159 (1986).
[CrossRef]

Richardson, D. J.

D. J. Richardson, P. Britton, and D. Taverner, Electron. Lett. 31, 393 (1997).

D. Taverner, D. J. Richardson, L. Dong, J. E. Caplen, K. Williams, and R. Penty, Opt. Lett. 22, 268 (1997).
[CrossRef]

Seguin, F.

F. Seguin and T. Oleskevich, Opt. Eng. 32, 2036 (1993).
[CrossRef]

Taverner, D.

D. J. Richardson, P. Britton, and D. Taverner, Electron. Lett. 31, 393 (1997).

D. Taverner, D. J. Richardson, L. Dong, J. E. Caplen, K. Williams, and R. Penty, Opt. Lett. 22, 268 (1997).
[CrossRef]

Williams, K.

Appl. Opt. (1)

Electron. Lett. (3)

D. J. Richardson, P. Britton, and D. Taverner, Electron. Lett. 31, 393 (1997).

R. J. Mears, L. Reekie, S. B. Poole, and D. N. Payne, Electron. Lett. 22, 159 (1986).
[CrossRef]

G. P. Lees, A. Hartog, A. Leach, and T. P. Newson, Electron. Lett. 31, 1836 (1995).
[CrossRef]

Opt. Eng. (2)

F. Seguin and T. Oleskevich, Opt. Eng. 32, 2036 (1993).
[CrossRef]

A. Chandonnet and G. Larose, Opt. Eng. 32, 2031 (1993).
[CrossRef]

Opt. Lett. (3)

Other (1)

J. D. Minelly, Z. J. Chen, R. J. Laming, and J. C. Caplen, in Proceedings of the 21st European Conference on Optical Communication (IMEC vzw, INTEC Department, Ghent, Belgium, 1995), pp. 917–920.

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Figures (4)

Fig. 1
Fig. 1

Refractive-index profile of the fiber preform, scaled to match the 21-mm-core fiber dimensions (solid curve) and calculated first (dashed curve) and second (dotted curve) guided modes.

Fig. 2
Fig. 2

Laser setup: HT, highly transmitting; HR, highly reflective; AOM, acousto-optic modulator; LMA, large mode area.

Fig. 3
Fig. 3

Pulse energy (solid curve with circles) and pulse width (dotted curve with squares) as a function of repetition rate for the 21µm-core fiber.

Fig. 4
Fig. 4

Pulse energy versus repetition rate for the 27µmcore fiber. The inset shows a slit scan of the intensity profile and the M2 values.

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